HighCVE-2024-6387

Openssh: regresshion - race condition in ssh allows rce/dos (CVE-2024-6387)

Published 01.07.2024Last modified 15.10.2026Sources: BSI, Siemens ProductCERT, SingCERT, SUSE, Debian, pwn.watch, Ubuntu, CVE.org, EUVD

Actively exploited
Source: VulnCheck KEV (opens in a new tab), ANSSI / CERT-FR How we classify
Public exploit

What is affected, what to do

A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner.

The vulnerability is being actively exploited; treat it as a priority. Update Red Hat Enterprise Linux 9 to version 0:8.7p1-38.el9_4.1, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions to version 0:8.7p1-12.el9_0.1, Red Hat Enterprise Linux 9.2 Extended Update Support to version 0:8.7p1-30.el9_2.4.

Affected: OpenSSH lte 8.5p1..9.7p1
Red Hat Enterprise Linux 9 lt *..0:8.7p1-38.el9_4.1
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions lt *..0:8.7p1-12.el9_0.1
Red Hat Enterprise Linux 9.2 Extended Update Support lt *..0:8.7p1-30.el9_2.4
Red Hat OpenShift Container Platform 4.13 lt *..413.92.202407091321-0
Red Hat OpenShift Container Platform 4.14 lt *..414.92.202407091253-0
Red Hat OpenShift Container Platform 4.15 lt *..415.92.202407091355-0
Red Hat OpenShift Container Platform 4.16 lt *..416.94.202407081958-0
Fixed in: Red Hat Enterprise Linux 9 0:8.7p1-38.el9_4.1
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:8.7p1-12.el9_0.1
Red Hat Enterprise Linux 9.2 Extended Update Support 0:8.7p1-30.el9_2.4
Red Hat OpenShift Container Platform 4.13 413.92.202407091321-0
Red Hat OpenShift Container Platform 4.14 414.92.202407091253-0
Red Hat OpenShift Container Platform 4.15 415.92.202407091355-0
Red Hat OpenShift Container Platform 4.16 416.94.202407081958-0

Not sure whether and how you are affected? Ask a question about this vulnerability

Metrics

8.1

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

8.1

CVSS v3

Severity High on the scale from 0 to 10.

Source: BSI, Siemens ProductCERT, SingCERT, SUSE, Debian, pwn.watch, Ubuntu, CVE.org, EUVD

99.51 %

EPSS score

High — model estimates ≥ 50% chance of real-world exploitation within 30 days.

Source: FIRST EPSS, percentile 99.94

Show all metrics

Severity: High
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 126.00 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: actively exploitedSource: VulnCheck KEV (opens in a new tab), ANSSI / CERT-FR How we classify
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 8.1 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 8.1
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 99.51 %; High — model estimates ≥ 50% chance of real-world exploitation within 30 days.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 99.94; Critical — this CVE ranks in the top fifth of all CVEs scored today (rank ≥ 80%).
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 01.07.2024
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-364

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: Actively exploited: treat the vulnerability as a priority in vulnerability handling under Art. 21(2)(e) NIS2. If it is exploited in your environment, check the reporting obligation under Art. 23 (early warning within 24 hours).
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: Since 11.09.2026, manufacturers of affected products with digital elements must report actively exploited vulnerabilities under Art. 14 CRA, with an early warning within 24 hours via ENISA's single reporting platform.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.

Source: BSI CSAF, BSI WID Portal, siemens_advisory, CSA/SingCERT, suse_csaf, Debian Security Advisories, pwn.watch, Ubuntu Security Notices, cvelistv5, NVD (NIST), CVE.org (MITRE), ENISA EUVD

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
—	OpenSSH	`8.5p1 – ≤ 9.7p1`	—
Red Hat	Red Hat Ceph Storage 5	`—`	—
Red Hat	Red Hat Ceph Storage 6	`—`	—
Red Hat	Red Hat Ceph Storage 7	`—`	—
Red Hat	Red Hat Enterprise Linux 10	`—`	—
Red Hat	Red Hat Enterprise Linux 6	`—`	—
Red Hat	Red Hat Enterprise Linux 7	`—`	—
Red Hat	Red Hat Enterprise Linux 8	`—`	—
Red Hat	Red Hat Enterprise Linux 9	`< 0:8.7p1-38.el9_4.1`	`0:8.7p1-38.el9_4.1`
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	`< 0:8.7p1-12.el9_0.1`	`0:8.7p1-12.el9_0.1`
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	`< 0:8.7p1-30.el9_2.4`	`0:8.7p1-30.el9_2.4`
Red Hat	Red Hat OpenShift Container Platform 4	`—`	—
Red Hat	Red Hat OpenShift Container Platform 4.13	`< 413.92.202407091321-0`	`413.92.202407091321-0`
Red Hat	Red Hat OpenShift Container Platform 4.14	`< 414.92.202407091253-0`	`414.92.202407091253-0`
Red Hat	Red Hat OpenShift Container Platform 4.15	`< 415.92.202407091355-0`	`415.92.202407091355-0`
Red Hat	Red Hat OpenShift Container Platform 4.16	`< 416.94.202407081958-0`	`416.94.202407081958-0`
netapp	active_iq_unified_manager	`—`	—
netapp	e-series_santricity_os_controller	`11.0.0 – ≤ 11.70.2`	—
netapp	ontap	`9`	—
netapp	ontap_select_deploy_administration_utility	`—`	—
netapp	ontap_tools	`9` `10`	— —
openbsd	openssh	`8.6 – ≤ 9.8` `4.4` `< 4.4` `8.5` `8.6`	— — `4.4` — —
redhat	openshift_container_platform	`4.0`	—
Oracle	Communications	`17.0.1` `23.4.0` `15.0.0.0.0` `24.1.0` `5.1` `14.0.0.1` `24.1.0.0.0` `24.2.2` `24.1.1` `12.11.0` `9.3.0` `9.0.1.10.0` `12.6.1.0.0` `9.1.1.3.0` `4.2.0` `23.4.3` `23.4.4` `4.1.0` `9.1.1.9.0` `9.1.0`	— — — — — — — — — — — — — — — — — — — —

Vendors and products

Affected operating systems

Affected operating systems

BSD	freebsd	freebsd	`13.2`
BSD	freebsd	freebsd	`13.3`
BSD	freebsd	freebsd	`14.0`
BSD	freebsd	freebsd	`14.1`
BSD	netbsd	netbsd	—
Linux	almalinux	almalinux	`9.0`
Linux	amazon	amazon_linux	`2023.0`
Linux	debian	debian_linux	`12.0`
Linux	redhat	enterprise_linux	`9.0`
Linux	redhat	enterprise_linux_eus	`9.4`
Linux	redhat	enterprise_linux_for_arm_64	`9.0_aarch64`
Linux	redhat	enterprise_linux_for_arm_64_eus	`9.4_aarch64`
Linux	redhat	enterprise_linux_for_ibm_z_systems	`9.0_s390x`
Linux	redhat	enterprise_linux_for_ibm_z_systems_eus	`9.4_s390x`
Linux	redhat	enterprise_linux_for_power_little_endian	`9.0_ppc64le`
Linux	redhat	enterprise_linux_for_power_little_endian_eus	`9.4_ppc64le`
Linux	redhat	enterprise_linux_server_aus	`9.4`
Linux	suse	linux_enterprise_micro	`6.0`
Linux	debian	openssh	`bookworm`
Linux	ubuntu	openssh	`jammy`
Linux	ubuntu	openssh	`mantic`
Linux	ubuntu	openssh	`noble`
Linux	canonical	ubuntu_linux	`22.04`
Linux	canonical	ubuntu_linux	`22.10`

Weakness classes (CWE)

CWE-364Signal Handler Race Condition
Base
The product uses a signal handler that introduces a race condition.
Entry at MITRE CWE-364

Public exploit references

Publicly reported proof-of-concepts, exploit modules and detection templates for this vulnerability. NEOSEC links to the original sources only and does not provide any exploit code.

Public exploit references

ANSSI / CERT-FRLicence Ouverte 2.0, as of 07.10.2024	CERTFR-2024-ALE-009 – Vulnérabilité dans OpenSSH (clôturée 2024-10-07) (opens in a new tab)cert.cyber.gouv.fr	actively exploited	01.07.2024
GitHub	zgzhang/cve-2024-6387-poc (opens in a new tab)github.com	PoC (publicly reported)reported, not verified	—
Packet Storm	Packet Storm 190587 (opens in a new tab)packetstorm.news	PoC (publicly reported)reported, not verified	—
Exploit-DB	EDB-ID 52269 (opens in a new tab)exploit-db.com	PoC (publicly reported)reported, not verified	—
PoC-in-GitHub (nomi-sec)	CVE-2024-6387-OpenSSH-Analysis (opens in a new tab)github.com	PoC (publicly reported)reported, not verified	24.07.2026
PoC-in-GitHub (nomi-sec)	checker-CVE-2024-6387 (opens in a new tab)github.com	PoC (publicly reported)reported, not verified	02.07.2024
PoC-in-GitHub (nomi-sec)	regreSSHion-Checker (opens in a new tab)github.com	PoC (publicly reported)reported, not verified	16.07.2026
PoC-in-GitHub (nomi-sec)	CVE-2024-6387 (opens in a new tab)github.com	PoC (publicly reported)reported, not verified	22.05.2026

References & sources

access.redhat.comRHSA-2024:4312Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2024:4340Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2024:4389Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2024:4469Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2024:4474Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2024:4479Vendor advisory, x_refsource_REDHAT
access.redhat.comRHSA-2024:4484Vendor advisory, x_refsource_REDHAT
access.redhat.comsecurity/cve/CVE-2024-6387Vulnerability database, x_refsource_REDHAT
bugzilla.redhat.comRHBZ#2294604Issue tracking, x_refsource_REDHAT
santandersecurityresearch.github.ioblog/sshing_the_masses.html
openssh.comOpenSSH 9.8 release notespwn-watch
qualys.com2024/07/01/cve-2024-6387/regresshion.txt
vicarius.iovsociety/posts/regresshion-an-openssh-regression-error-cve-2024…
exploit-db.comexploits/52269
packetstorm.newsfiles/id/190587
openwall.comlists/oss-security/2024/07/01/12x_transferred
openwall.comlists/oss-security/2024/07/01/13x_transferred
openwall.comlists/oss-security/2024/07/02/1x_transferred
openwall.comlists/oss-security/2024/07/03/1x_transferred
openwall.comlists/oss-security/2024/07/03/11x_transferred

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

15.10.2026Record modifiedRed Hat

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2024/6xxx/CVE-2024-6387.json">CVE-2024-6387</a>

Source identifier: secalert@redhat.com

31.08.2026Record modifiedRed Hat

New references:

and 8 more references

Show 37 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2024/6xxx/CVE-2024-6387.json">CVE-2024-6387</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4312
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4340
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4389
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4469
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4474
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4479
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4484
Reference	added	—	https://access.redhat.com/security/cve/CVE-2024-6387
Reference	added	—	https://bugzilla.redhat.com/show_bug.cgi?id=2294604
Reference	added	—	https://santandersecurityresearch.github.io/blog/sshing_the_masses.html
Reference	added	—	https://www.openssh.com/txt/release-9.8
Reference	added	—	https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4312	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4340	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4389	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4469	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4474	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4479	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4484	—
Reference	removed	https://access.redhat.com/security/cve/CVE-2024-6387	—
Reference	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2294604	—
Reference	removed	https://santandersecurityresearch.github.io/blog/sshing_the_masses.html	—
Reference	removed	https://www.openssh.com/txt/release-9.8	—
Reference	removed	https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4312 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4340 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4389 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4469 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4474 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4479 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4484 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/security/cve/CVE-2024-6387 Types: Third Party Advisory	—
Reference type	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2294604 Types: Third Party Advisory	—
Reference type	removed	https://santandersecurityresearch.github.io/blog/sshing_the_masses.html Types: Exploit, Third Party Advisory	—
Reference type	removed	https://www.openssh.com/txt/release-9.8 Types: Release Notes, Third Party Advisory	—
Reference type	removed	https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt Types: Exploit, Third Party Advisory	—

Source identifier: secalert@redhat.com

31.08.2026Record modifiedCVE Program

New references:

and 8 more references

Show 237 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	http://seclists.org/fulldisclosure/2024/Jul/18
Reference	added	—	http://seclists.org/fulldisclosure/2024/Jul/19
Reference	added	—	http://seclists.org/fulldisclosure/2024/Jul/20
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/01/12
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/01/13
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/02/1
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/03/1
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/03/11
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/03/2
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/03/3
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/03/4
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/03/5
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/04/1
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/04/2
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/08/2
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/08/3
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/09/2
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/09/5
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/10/1
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/10/2
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/10/3
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/10/4
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/10/6
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/11/1
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/11/3
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/23/4
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/23/6
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/28/2
Reference	added	—	http://www.openwall.com/lists/oss-security/2024/07/28/3
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4312
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4340
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4389
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4469
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4474
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4479
Reference	added	—	https://access.redhat.com/errata/RHSA-2024:4484
Reference	added	—	https://access.redhat.com/security/cve/CVE-2024-6387
Reference	added	—	https://archlinux.org/news/the-sshd-service-needs-to-be-restarted-after-upgrading-to-openssh-98p1/
Reference	added	—	https://arstechnica.com/security/2024/07/regresshion-vulnerability-in-openssh-gives-attackers-root-on-linux/
Reference	added	—	https://blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-server
Reference	added	—	https://bugzilla.redhat.com/show_bug.cgi?id=2294604
Reference	added	—	https://explore.alas.aws.amazon.com/CVE-2024-6387.html
Reference	added	—	https://forum.vmssoftware.com/viewtopic.php?f=8&t=9132
Reference	added	—	https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-002.txt.asc
Reference	added	—	https://github.com/AlmaLinux/updates/issues/629
Reference	added	—	https://github.com/Azure/AKS/issues/4379
Reference	added	—	https://github.com/microsoft/azurelinux/issues/9555
Reference	added	—	https://github.com/openela-main/openssh/commit/e1f438970e5a337a17070a637c1b9e19697cad09
Reference	added	—	https://github.com/oracle/oracle-linux/issues/149
Reference	added	—	https://github.com/PowerShell/Win32-OpenSSH/discussions/2248
Reference	added	—	https://github.com/PowerShell/Win32-OpenSSH/issues/2249
Reference	added	—	https://github.com/rapier1/hpn-ssh/issues/87
Reference	added	—	https://github.com/zgzhang/cve-2024-6387-poc
Reference	added	—	https://lists.almalinux.org/archives/list/announce@lists.almalinux.org/thread/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/
Reference	added	—	https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html
Reference	added	—	https://lists.mindrot.org/pipermail/openssh-unix-dev/2024-July/041431.html
Reference	added	—	https://news.ycombinator.com/item?id=40843778
Reference	added	—	https://packetstorm.news/files/id/190587/
Reference	added	—	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010
Reference	added	—	https://santandersecurityresearch.github.io/blog/sshing_the_masses.html
Reference	added	—	https://security-tracker.debian.org/tracker/CVE-2024-6387
Reference	added	—	https://security.netapp.com/advisory/ntap-20240701-0001/
Reference	added	—	https://sig-security.rocky.page/issues/CVE-2024-6387/
Reference	added	—	https://stackdiary.com/openssh-race-condition-in-sshd-allows-remote-code-execution/
Reference	added	—	https://support.apple.com/kb/HT214118
Reference	added	—	https://support.apple.com/kb/HT214119
Reference	added	—	https://support.apple.com/kb/HT214120
Reference	added	—	https://ubuntu.com/security/CVE-2024-6387
Reference	added	—	https://ubuntu.com/security/notices/USN-6859-1
Reference	added	—	https://www.akamai.com/blog/security-research/2024-openssh-vulnerability-regression-what-to-know-and-do
Reference	added	—	https://www.arista.com/en/support/advisories-notices/security-advisory/19904-security-advisory-0100
Reference	added	—	https://www.exploit-db.com/exploits/52269
Reference	added	—	https://www.freebsd.org/security/advisories/FreeBSD-SA-24:04.openssh.asc
Reference	added	—	https://www.openssh.com/txt/release-9.8
Reference	added	—	https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt
Reference	added	—	https://www.splunk.com/en_us/blog/security/cve-2024-6387-regresshion-vulnerability.html
Reference	added	—	https://www.suse.com/security/cve/CVE-2024-6387.html
Reference	added	—	https://www.theregister.com/2024/07/01/regresshion_openssh/
Reference	added	—	https://www.vicarius.io/vsociety/posts/regresshion-an-openssh-regression-error-cve-2024-6387
Reference	removed	http://seclists.org/fulldisclosure/2024/Jul/18	—
Reference	removed	http://seclists.org/fulldisclosure/2024/Jul/19	—
Reference	removed	http://seclists.org/fulldisclosure/2024/Jul/20	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/01/12	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/01/13	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/02/1	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/03/1	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/03/11	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/03/2	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/03/3	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/03/4	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/03/5	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/04/1	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/04/2	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/08/2	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/08/3	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/09/2	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/09/5	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/10/1	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/10/2	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/10/3	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/10/4	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/10/6	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/11/1	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/11/3	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/23/4	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/23/6	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/28/2	—
Reference	removed	http://www.openwall.com/lists/oss-security/2024/07/28/3	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4312	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4340	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4389	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4469	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4474	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4479	—
Reference	removed	https://access.redhat.com/errata/RHSA-2024:4484	—
Reference	removed	https://access.redhat.com/security/cve/CVE-2024-6387	—
Reference	removed	https://archlinux.org/news/the-sshd-service-needs-to-be-restarted-after-upgrading-to-openssh-98p1/	—
Reference	removed	https://arstechnica.com/security/2024/07/regresshion-vulnerability-in-openssh-gives-attackers-root-on-linux/	—
Reference	removed	https://blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-server	—
Reference	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2294604	—
Reference	removed	https://explore.alas.aws.amazon.com/CVE-2024-6387.html	—
Reference	removed	https://forum.vmssoftware.com/viewtopic.php?f=8&t=9132	—
Reference	removed	https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-002.txt.asc	—
Reference	removed	https://github.com/AlmaLinux/updates/issues/629	—
Reference	removed	https://github.com/Azure/AKS/issues/4379	—
Reference	removed	https://github.com/microsoft/azurelinux/issues/9555	—
Reference	removed	https://github.com/openela-main/openssh/commit/e1f438970e5a337a17070a637c1b9e19697cad09	—
Reference	removed	https://github.com/oracle/oracle-linux/issues/149	—
Reference	removed	https://github.com/PowerShell/Win32-OpenSSH/discussions/2248	—
Reference	removed	https://github.com/PowerShell/Win32-OpenSSH/issues/2249	—
Reference	removed	https://github.com/rapier1/hpn-ssh/issues/87	—
Reference	removed	https://github.com/zgzhang/cve-2024-6387-poc	—
Reference	removed	https://lists.almalinux.org/archives/list/announce@lists.almalinux.org/thread/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/	—
Reference	removed	https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html	—
Reference	removed	https://lists.mindrot.org/pipermail/openssh-unix-dev/2024-July/041431.html	—
Reference	removed	https://news.ycombinator.com/item?id=40843778	—
Reference	removed	https://packetstorm.news/files/id/190587/	—
Reference	removed	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010	—
Reference	removed	https://santandersecurityresearch.github.io/blog/sshing_the_masses.html	—
Reference	removed	https://security-tracker.debian.org/tracker/CVE-2024-6387	—
Reference	removed	https://security.netapp.com/advisory/ntap-20240701-0001/	—
Reference	removed	https://sig-security.rocky.page/issues/CVE-2024-6387/	—
Reference	removed	https://stackdiary.com/openssh-race-condition-in-sshd-allows-remote-code-execution/	—
Reference	removed	https://support.apple.com/kb/HT214118	—
Reference	removed	https://support.apple.com/kb/HT214119	—
Reference	removed	https://support.apple.com/kb/HT214120	—
Reference	removed	https://ubuntu.com/security/CVE-2024-6387	—
Reference	removed	https://ubuntu.com/security/notices/USN-6859-1	—
Reference	removed	https://www.akamai.com/blog/security-research/2024-openssh-vulnerability-regression-what-to-know-and-do	—
Reference	removed	https://www.arista.com/en/support/advisories-notices/security-advisory/19904-security-advisory-0100	—
Reference	removed	https://www.exploit-db.com/exploits/52269	—
Reference	removed	https://www.freebsd.org/security/advisories/FreeBSD-SA-24:04.openssh.asc	—
Reference	removed	https://www.openssh.com/txt/release-9.8	—
Reference	removed	https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt	—
Reference	removed	https://www.splunk.com/en_us/blog/security/cve-2024-6387-regresshion-vulnerability.html	—
Reference	removed	https://www.suse.com/security/cve/CVE-2024-6387.html	—
Reference	removed	https://www.theregister.com/2024/07/01/regresshion_openssh/	—
Reference	removed	https://www.vicarius.io/vsociety/posts/regresshion-an-openssh-regression-error-cve-2024-6387	—
Reference type	removed	http://seclists.org/fulldisclosure/2024/Jul/18 Types: Mailing List	—
Reference type	removed	http://seclists.org/fulldisclosure/2024/Jul/19 Types: Mailing List	—
Reference type	removed	http://seclists.org/fulldisclosure/2024/Jul/20 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/01/12 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/01/13 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/02/1 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/03/1 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/03/11 Types: Exploit, Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/03/2 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/03/3 Types: Mailing List, Patch	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/03/4 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/03/5 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/04/1 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/04/2 Types: Exploit, Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/08/2 Types: Exploit, Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/08/3 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/09/2 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/09/5 Types: Exploit, Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/10/1 Types: Exploit, Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/10/2 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/10/3 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/10/4 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/10/6 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/11/1 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/11/3 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/23/4 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/23/6 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/28/2 Types: Mailing List	—
Reference type	removed	http://www.openwall.com/lists/oss-security/2024/07/28/3 Types: Mailing List	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4312 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4340 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4389 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4469 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4474 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4479 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/errata/RHSA-2024:4484 Types: Third Party Advisory	—
Reference type	removed	https://access.redhat.com/security/cve/CVE-2024-6387 Types: Third Party Advisory	—
Reference type	removed	https://archlinux.org/news/the-sshd-service-needs-to-be-restarted-after-upgrading-to-openssh-98p1/ Types: Third Party Advisory	—
Reference type	removed	https://arstechnica.com/security/2024/07/regresshion-vulnerability-in-openssh-gives-attackers-root-on-linux/ Types: Press/Media Coverage, Third Party Advisory	—
Reference type	removed	https://blog.qualys.com/vulnerabilities-threat-research/2024/07/01/regresshion-remote-unauthenticated-code-execution-vulnerability-in-openssh-server Types: Press/Media Coverage, Third Party Advisory	—
Reference type	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2294604 Types: Third Party Advisory	—
Reference type	removed	https://explore.alas.aws.amazon.com/CVE-2024-6387.html Types: Third Party Advisory	—
Reference type	removed	https://forum.vmssoftware.com/viewtopic.php?f=8&t=9132 Types: Issue Tracking	—
Reference type	removed	https://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2024-002.txt.asc Types: Release Notes	—
Reference type	removed	https://github.com/AlmaLinux/updates/issues/629 Types: Issue Tracking	—
Reference type	removed	https://github.com/Azure/AKS/issues/4379 Types: Issue Tracking	—
Reference type	removed	https://github.com/microsoft/azurelinux/issues/9555 Types: Issue Tracking	—
Reference type	removed	https://github.com/openela-main/openssh/commit/e1f438970e5a337a17070a637c1b9e19697cad09 Types: Patch	—
Reference type	removed	https://github.com/oracle/oracle-linux/issues/149 Types: Issue Tracking	—
Reference type	removed	https://github.com/PowerShell/Win32-OpenSSH/discussions/2248 Types: Issue Tracking	—
Reference type	removed	https://github.com/PowerShell/Win32-OpenSSH/issues/2249 Types: Issue Tracking	—
Reference type	removed	https://github.com/rapier1/hpn-ssh/issues/87 Types: Issue Tracking	—
Reference type	removed	https://github.com/zgzhang/cve-2024-6387-poc Types: Third Party Advisory	—
Reference type	removed	https://lists.almalinux.org/archives/list/announce@lists.almalinux.org/thread/23BF5BMGFVEVUI2WNVAGMLKT557EU7VY/ Types: Third Party Advisory	—
Reference type	removed	https://lists.mindrot.org/pipermail/openssh-unix-announce/2024-July/000158.html Types: Mailing List, Release Notes	—
Reference type	removed	https://lists.mindrot.org/pipermail/openssh-unix-dev/2024-July/041431.html Types: Mailing List, Patch	—
Reference type	removed	https://news.ycombinator.com/item?id=40843778 Types: Issue Tracking, Patch	—
Reference type	removed	https://packetstorm.news/files/id/190587/ Types: Broken Link	—
Reference type	removed	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0010 Types: Third Party Advisory	—
Reference type	removed	https://santandersecurityresearch.github.io/blog/sshing_the_masses.html Types: Exploit, Third Party Advisory	—
Reference type	removed	https://security-tracker.debian.org/tracker/CVE-2024-6387 Types: Third Party Advisory	—
Reference type	removed	https://security.netapp.com/advisory/ntap-20240701-0001/ Types: Third Party Advisory	—
Reference type	removed	https://sig-security.rocky.page/issues/CVE-2024-6387/ Types: Third Party Advisory	—
Reference type	removed	https://stackdiary.com/openssh-race-condition-in-sshd-allows-remote-code-execution/ Types: Press/Media Coverage, Third Party Advisory	—
Reference type	removed	https://support.apple.com/kb/HT214118 Types: Third Party Advisory	—
Reference type	removed	https://support.apple.com/kb/HT214119 Types: Third Party Advisory	—
Reference type	removed	https://support.apple.com/kb/HT214120 Types: Third Party Advisory	—
Reference type	removed	https://ubuntu.com/security/CVE-2024-6387 Types: Third Party Advisory	—
Reference type	removed	https://ubuntu.com/security/notices/USN-6859-1 Types: Third Party Advisory	—
Reference type	removed	https://www.akamai.com/blog/security-research/2024-openssh-vulnerability-regression-what-to-know-and-do Types: Third Party Advisory	—
Reference type	removed	https://www.arista.com/en/support/advisories-notices/security-advisory/19904-security-advisory-0100 Types: Third Party Advisory	—
Reference type	removed	https://www.exploit-db.com/exploits/52269 Types: Exploit	—
Reference type	removed	https://www.freebsd.org/security/advisories/FreeBSD-SA-24:04.openssh.asc Types: Third Party Advisory	—
Reference type	removed	https://www.openssh.com/txt/release-9.8 Types: Release Notes, Third Party Advisory	—
Reference type	removed	https://www.qualys.com/2024/07/01/cve-2024-6387/regresshion.txt Types: Exploit, Third Party Advisory	—
Reference type	removed	https://www.splunk.com/en_us/blog/security/cve-2024-6387-regresshion-vulnerability.html Types: Third Party Advisory	—
Reference type	removed	https://www.suse.com/security/cve/CVE-2024-6387.html Types: Third Party Advisory	—
Reference type	removed	https://www.theregister.com/2024/07/01/regresshion_openssh/ Types: Press/Media Coverage, Third Party Advisory	—
Reference type	removed	https://www.vicarius.io/vsociety/posts/regresshion-an-openssh-regression-error-cve-2024-6387 Types: Exploit, Third Party Advisory	—

Source identifier: af854a3a-2127-422b-91ae-364da2661108

31.08.2026Record modifiedSiemens ADP

New references:

Show 4 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Reference	added	—	https://cert-portal.siemens.com/productcert/html/ssa-446545.html
Reference	removed	https://cert-portal.siemens.com/productcert/html/ssa-082556.html	—
Reference	removed	https://cert-portal.siemens.com/productcert/html/ssa-446545.html	—

Source identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Linked advisories

SSA-446545 V1.0: Impact of RegreSSHion (CVE-2024-6387) in Siemens Industrial ProductsSiemens ProductCERT

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<a href="https://intel.neosec.eu/en/cve/CVE-2024-6387"><img src="https://intel.neosec.eu/badge/cve/CVE-2024-6387.svg?lang=en" alt="CVE-2024-6387 – NEOSEC Intel" height="20"></a>