Sssd: sssd default kerberos configuration allows privilege escalation on ad-joined linux systems (CVE-2025-11561)
Published Last modified Sources: Red Hat, CVE.org, BSI
What is affected, what to do
A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible.
Update Red Hat Enterprise Linux 10 to version 0:2.10.2-3.el10_0.3, Red Hat Enterprise Linux 10 to version 0:2.11.1-2.el10_1.1, Red Hat Enterprise Linux 7 Extended Lifecycle Support to version 0:1.16.5-10.el7_9.17.
- Affected
- Sssd
lte *..2.11.1 - Red Hat Enterprise Linux 10
lt *..0:2.10.2-3.el10_0.3 - Red Hat Enterprise Linux 10
lt *..0:2.11.1-2.el10_1.1 - Red Hat Enterprise Linux 7 Extended Lifecycle Support
lt *..0:1.16.5-10.el7_9.17 - Red Hat Enterprise Linux 8
lt *..0:2.9.4-5.el8_10.3 - Red Hat Enterprise Linux 8.2 Advanced Update Support
lt *..0:2.2.3-20.el8_2.3 - Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
lt *..0:2.4.0-9.el8_4.4 - Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
lt *..0:2.4.0-9.el8_4.4 - Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
lt *..0:2.6.2-4.el8_6.4 - Red Hat Enterprise Linux 8.6 Telecommunications Update Service
lt *..0:2.6.2-4.el8_6.4 - Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
lt *..0:2.6.2-4.el8_6.4 - Red Hat Enterprise Linux 8.8 Telecommunications Update Service
lt *..0:2.8.2-4.el8_8.3 - Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
lt *..0:2.8.2-4.el8_8.3 - Red Hat Enterprise Linux 9
lt *..0:2.9.7-4.el9_7.1 - Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
lt *..0:2.6.2-4.el9_0.4 - Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
lt *..0:2.8.2-5.el9_2.6 - Red Hat Enterprise Linux 9.4 Extended Update Support
lt *..0:2.9.4-6.el9_4.4 - Red Hat Enterprise Linux 9.6 Extended Update Support
lt *..0:2.9.6-4.el9_6.3 - Red Hat OpenShift Container Platform 4.12
lt *..412.86.202601061735-0 - Red Hat OpenShift Container Platform 4.13
lt *..413.92.202601130113-0 - Red Hat OpenShift Container Platform 4.14
lt *..414.92.202511122212-0 - Red Hat OpenShift Container Platform 4.15
lt *..415.92.202512100122-0 - Red Hat OpenShift Container Platform 4.16
lt *..416.94.202512030118-0 - Red Hat OpenShift Container Platform 4.17
lt *..417.94.202511260612-0 - Red Hat OpenShift Container Platform 4.18
lt *..418.94.202511170715-0 - Red Hat OpenShift Container Platform 4.19
lt *..4.19.9.6.202511252219-0 - Red Hat OpenShift Container Platform 4.20
lt *..4.20.9.6.202511252309-0 - Red Hat Ceph Storage 7
lt *..7 - Red Hat Ceph Storage 8
lt *..8
- Sssd
- Fixed in
- Red Hat Enterprise Linux 10
0:2.10.2-3.el10_0.3 - Red Hat Enterprise Linux 10
0:2.11.1-2.el10_1.1 - Red Hat Enterprise Linux 7 Extended Lifecycle Support
0:1.16.5-10.el7_9.17 - Red Hat Enterprise Linux 8
0:2.9.4-5.el8_10.3 - Red Hat Enterprise Linux 8.2 Advanced Update Support
0:2.2.3-20.el8_2.3 - Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
0:2.4.0-9.el8_4.4 - Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
0:2.4.0-9.el8_4.4 - Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
0:2.6.2-4.el8_6.4 - Red Hat Enterprise Linux 8.6 Telecommunications Update Service
0:2.6.2-4.el8_6.4 - Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
0:2.6.2-4.el8_6.4 - Red Hat Enterprise Linux 8.8 Telecommunications Update Service
0:2.8.2-4.el8_8.3 - Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
0:2.8.2-4.el8_8.3 - Red Hat Enterprise Linux 9
0:2.9.7-4.el9_7.1 - Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
0:2.6.2-4.el9_0.4 - Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
0:2.8.2-5.el9_2.6 - Red Hat Enterprise Linux 9.4 Extended Update Support
0:2.9.4-6.el9_4.4 - Red Hat Enterprise Linux 9.6 Extended Update Support
0:2.9.6-4.el9_6.3 - Red Hat OpenShift Container Platform 4.12
412.86.202601061735-0 - Red Hat OpenShift Container Platform 4.13
413.92.202601130113-0 - Red Hat OpenShift Container Platform 4.14
414.92.202511122212-0 - Red Hat OpenShift Container Platform 4.15
415.92.202512100122-0 - Red Hat OpenShift Container Platform 4.16
416.94.202512030118-0 - Red Hat OpenShift Container Platform 4.17
417.94.202511260612-0 - Red Hat OpenShift Container Platform 4.18
418.94.202511170715-0 - Red Hat OpenShift Container Platform 4.19
4.19.9.6.202511252219-0 - Red Hat OpenShift Container Platform 4.20
4.20.9.6.202511252309-0 - Red Hat Ceph Storage 7
7 - Red Hat Ceph Storage 8
8
- Red Hat Enterprise Linux 10
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Metrics
8.8
Priority
XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.
Source: Vendor (CNA), CVSS v3
8.8
CVSS v3
Severity High on the scale from 0 to 10.
Source: Red Hat, CVE.org, BSI
0.8 %
EPSS score
Low — model estimates < 1% exploitation likelihood.
Source: FIRST EPSS, percentile 56.6
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- 81.00 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- no public PoC known
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- 8.8 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- 8.8
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- 0.8 %
- Low — model estimates < 1% exploitation likelihood.
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- 56.6
- High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
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
- CISA assessment (SSVC)
- Exploitation: none known · not automatable · Technical impact: total
- Source: CISA Vulnrichment, as of 10 October 2025
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-269
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- High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
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- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
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 flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.
Source: redhat_csaf, cvelistv5, NVD (NIST), BSI WID Portal, BSI CSAF
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| — | sssd |
|
|
| Red Hat | Red Hat Ceph Storage 7 |
|
|
| Red Hat | Red Hat Ceph Storage 8 |
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
|
|
| Red Hat | Red Hat Enterprise Linux 6 |
|
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
|
|
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support |
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service |
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions |
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
|
|
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
|
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| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
|
|
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support |
|
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.12 |
|
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| Red Hat | Red Hat OpenShift Container Platform 4.13 |
|
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| Red Hat | Red Hat OpenShift Container Platform 4.14 |
|
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| Red Hat | Red Hat OpenShift Container Platform 4.15 |
|
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| Red Hat | Red Hat OpenShift Container Platform 4.16 |
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.17 |
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.18 |
|
|
| Red Hat | Red Hat OpenShift Container Platform 4.19 |
|
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| Red Hat | Red Hat OpenShift Container Platform 4.20 |
|
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| Red Hat | Enterprise Linux |
|
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| Red Hat | OpenShift Container Platform |
|
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| Xerox | FreeFlow Print Server |
|
|
Vendors and products
- Red Hat Enterprise Linux
- Red Hat Openshift Container Platform
- Red Hat Red Hat Ceph Storage 7
- Red Hat Red Hat Ceph Storage 8
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat Enterprise Linux 6
- Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
- Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-life Add-on
- Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Weakness classes (CWE)
CWE-269Improper Privilege Management
Class
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Entry at MITRE CWE-269
References & sources
- access.redhat.comRHSA-2025:19610Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19847Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19848Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19849Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19850Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19851Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19852Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19853Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19854Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:19859Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:20954Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:21020Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:21067Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:21329Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:21795Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:22256Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:22265Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:22277Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:22529Vendor advisory, x_refsource_REDHAT
- access.redhat.comRHSA-2025:22548Vendor advisory, x_refsource_REDHAT
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).
Record modifiedRed Hat
Show 57 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/2025/11xxx/CVE-2025-11561.json">CVE-2025-11561</a>Reference added —https://access.redhat.com/errata/RHSA-2025:19610Reference added —https://access.redhat.com/errata/RHSA-2025:19847Reference added —https://access.redhat.com/errata/RHSA-2025:19848Reference added —https://access.redhat.com/errata/RHSA-2025:19849Reference added —https://access.redhat.com/errata/RHSA-2025:19850Reference added —https://access.redhat.com/errata/RHSA-2025:19851Reference added —https://access.redhat.com/errata/RHSA-2025:19852Reference added —https://access.redhat.com/errata/RHSA-2025:19853Reference added —https://access.redhat.com/errata/RHSA-2025:19854Reference added —https://access.redhat.com/errata/RHSA-2025:19859Reference added —https://access.redhat.com/errata/RHSA-2025:20954Reference added —https://access.redhat.com/errata/RHSA-2025:21020Reference added —https://access.redhat.com/errata/RHSA-2025:21067Reference added —https://access.redhat.com/errata/RHSA-2025:21329Reference added —https://access.redhat.com/errata/RHSA-2025:21795Reference added —https://access.redhat.com/errata/RHSA-2025:22256Reference added —https://access.redhat.com/errata/RHSA-2025:22265Reference added —https://access.redhat.com/errata/RHSA-2025:22277Reference added —https://access.redhat.com/errata/RHSA-2025:22529Reference added —https://access.redhat.com/errata/RHSA-2025:22548Reference added —https://access.redhat.com/errata/RHSA-2025:22724Reference added —https://access.redhat.com/errata/RHSA-2025:23113Reference added —https://access.redhat.com/errata/RHSA-2026:0316Reference added —https://access.redhat.com/errata/RHSA-2026:0677Reference added —https://access.redhat.com/security/cve/CVE-2025-11561Reference added —https://blog.async.sg/kerberos-ldrReference added —https://bugzilla.redhat.com/show_bug.cgi?id=2402727Reference added —https://github.com/SSSD/sssd/issues/8021Reference removed https://access.redhat.com/errata/RHSA-2025:19610—Reference removed https://access.redhat.com/errata/RHSA-2025:19847—Reference removed https://access.redhat.com/errata/RHSA-2025:19848—Reference removed https://access.redhat.com/errata/RHSA-2025:19849—Reference removed https://access.redhat.com/errata/RHSA-2025:19850—Reference removed https://access.redhat.com/errata/RHSA-2025:19851—Reference removed https://access.redhat.com/errata/RHSA-2025:19852—Reference removed https://access.redhat.com/errata/RHSA-2025:19853—Reference removed https://access.redhat.com/errata/RHSA-2025:19854—Reference removed https://access.redhat.com/errata/RHSA-2025:19859—Reference removed https://access.redhat.com/errata/RHSA-2025:20954—Reference removed https://access.redhat.com/errata/RHSA-2025:21020—Reference removed https://access.redhat.com/errata/RHSA-2025:21067—Reference removed https://access.redhat.com/errata/RHSA-2025:21329—Reference removed https://access.redhat.com/errata/RHSA-2025:21795—Reference removed https://access.redhat.com/errata/RHSA-2025:22256—Reference removed https://access.redhat.com/errata/RHSA-2025:22265—Reference removed https://access.redhat.com/errata/RHSA-2025:22277—Reference removed https://access.redhat.com/errata/RHSA-2025:22529—Reference removed https://access.redhat.com/errata/RHSA-2025:22548—Reference removed https://access.redhat.com/errata/RHSA-2025:22724—Reference removed https://access.redhat.com/errata/RHSA-2025:23113—Reference removed https://access.redhat.com/errata/RHSA-2026:0316—Reference removed https://access.redhat.com/errata/RHSA-2026:0677—Reference removed https://access.redhat.com/security/cve/CVE-2025-11561—Reference removed https://blog.async.sg/kerberos-ldr—Reference removed https://bugzilla.redhat.com/show_bug.cgi?id=2402727—Reference removed https://github.com/SSSD/sssd/issues/8021—Source identifier: secalert@redhat.com
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<a href="https://intel.neosec.eu/en/cve/CVE-2025-11561"><img src="https://intel.neosec.eu/badge/cve/CVE-2025-11561.svg?lang=en" alt="CVE-2025-11561 – NEOSEC Intel" height="20"></a>