HighCVE-2026-54371

attr < 2.6.0 Symlink Traversal Privilege Escalation via getfattr/setfattr (CVE-2026-54371)

Published 29.06.2026Last modified 25.10.2026Sources: Red Hat, BSI, CVE.org, Msrc Update Guide, SUSE, Ubuntu

What is affected, what to do

Update Attr to version 2.6.0.

Affected: Attr lt *..2.6.0
Fixed in: Attr 2.6.0

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

Metrics

8.4

Priority

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

Source: NVD, CVSS v4

7.1

CVSS v3

Severity High on the scale from 0 to 10.

Source: Red Hat, BSI, CVE.org, Msrc Update Guide, SUSE, Ubuntu

0.2 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 3.8

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: 61.88 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: 8.4 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: 7.1
CVSS v4 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: 8.4
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: 0.2 %; 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: 3.8; Low — this CVE sits in the lower 10% of all CVEs scored today.
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: 29.06.2026
CISA assessment (SSVC): Exploitation: none known · not automatable · Technical impact: partial; Source: CISA Vulnrichment, as of 30 June 2026
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-59, CWE-59

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 `attr` package. This vulnerability allows a local attacker to perform a symlink traversal attack by replacing a pathname component with a symbolic link - either during directory hierarchy traversal by `getfattr` or during backup restoration by `setfattr`, which reads and resolves full pathnames from backup files. In both cases, when these utilities are executed by a privileged process over a path controlled by the attacker, this can lead to local privilege escalation.

Source: redhat_csaf, BSI WID Portal, BSI CSAF, NVD (NIST), Microsoft Security Update Guide, suse_csaf, cvelistv5, Ubuntu Security Notices, CVE.org (MITRE)

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
attr project	attr	`< 2.6.0`	`2.6.0`
IBM	QRadar SIEM	`< 7.6.0.3` `<7.5.0 UP16 IF01`	`7.6.0.3` —

Vendors and products

IBM Qradar Siem

Weakness classes (CWE)

CWE-59Improper Link Resolution Before File Access ('Link Following')
Base
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Entry at MITRE CWE-59
CWE-59Improper Link Resolution Before File Access ('Link Following')
Base
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Entry at MITRE CWE-59

References & sources

cgit.git.savannah.nongnu.orgcgit/attr.git/commit/?id=c440855d6b33446edf4b5eb1a2d892281f15a9…Patch
cgit.git.savannah.nongnu.orgcgit/attr.git/commit/?id=49f79e947270f06940b9100fa638f85dddc4aa…Issue tracking
vulncheck.comadvisories/attr-symlink-traversal-privilege-escalation-via-getf…Third-party advisory
access.redhat.comsecurity/cve/CVE-2026-54371Vulnerability database, x_refsource_REDHAT
bugzilla.redhat.comRHBZ#2490283Issue tracking, x_refsource_REDHAT
security.access.redhat.comdata/csaf/v2/vex/2026/cve-2026-54371.jsonx_sadp-csaf-vex
access.redhat.comerrata/RHSA-2026:34889Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:56133Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:59380Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:60226Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:61783Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:63135Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:63138Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:66018Vendor 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).

11.09.2026Record modifiedRed Hat ADP

New references:

https://access.redhat.com/errata/RHSA-2026:66018

Show 2 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/2026/54xxx/CVE-2026-54371.json">CVE-2026-54371</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:66018

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

09.09.2026Record modifiedRed Hat ADP

New references:

Show 3 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/2026/54xxx/CVE-2026-54371.json">CVE-2026-54371</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:63135
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:63138

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

01.09.2026Record modifiedRed Hat ADP
New references:
- https://access.redhat.com/errata/RHSA-2026:61783
Show the original change
Individual changes of this event as published by NVD
Type Action Before After
Reference added
—
https://access.redhat.com/errata/RHSA-2026:61783
Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:61783

27.08.2026Record modifiedRed Hat ADP

New references:

https://access.redhat.com/errata/RHSA-2026:60226

Show 2 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/2026/54xxx/CVE-2026-54371.json">CVE-2026-54371</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:60226

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

24.08.2026Record modifiedRed Hat ADP

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)	changed	Red Hat Enterprise Linux 8, Red Hat Hardened Images, Red Hat Enterprise Linux 10 (+4)	Red Hat Enterprise Linux 8, Red Hat Hardened Images, Red Hat Enterprise Linux 10 (+4)

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Show 4 older changes

19.08.2026Record modifiedRed Hat ADP

New references:

https://access.redhat.com/errata/RHSA-2026:56133

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:56133
Affected versions (publisher)	changed	Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 (+4)	Red Hat Enterprise Linux 8, Red Hat Hardened Images, Red Hat Enterprise Linux 10 (+4)

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

03.07.2026Record modifiedRed Hat ADP

CVSS V3.1: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS V3.1: before AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, after —

New references:

https://access.redhat.com/errata/RHSA-2026:34889

Show 4 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
CVSS	added	—	AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS	removed	AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	—
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:34889
Affected versions (publisher)	changed	Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 (+4)	Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 (+4)

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

30.06.2026Record modifiedVulnCheck
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) changed
acl
attr
Source identifier: disclosure@vulncheck.com

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	changed	acl	attr

29.06.2026ReceivedVulnCheck

CVSS V4.0: AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS V3.1: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness type: CWE-59

Description added or changed

New references:

Show 8 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	acl
Description	added	—	attr before version 2.6.0 contains a symlink traversal vulnerability in the getfattr and setfattr utilities that allows local attackers to escalate privileges by replacing a pathname component with a symbolic link during directory hierarchy traversal. Attackers who control a pathname component can redirect getfattr and setfattr operations to arbitrary files by substituting a symlink, leading to local privilege escalation when getfattr or setfattr is invoked by a privileged process over an attacker-controlled path.
CVSS	added	—	AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS	added	—	AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness type (CWE)	added	—	CWE-59
Reference	added	—	https://cgit.git.savannah.nongnu.org/cgit/attr.git/commit/?id=49f79e947270f06940b9100fa638f85dddc4aa7f
Reference	added	—	https://cgit.git.savannah.nongnu.org/cgit/attr.git/commit/?id=c440855d6b33446edf4b5eb1a2d892281f15a99b
Reference	added	—	https://www.vulncheck.com/advisories/attr-symlink-traversal-privilege-escalation-via-getfattr-setfattr

Source identifier: disclosure@vulncheck.com

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<a href="https://intel.neosec.eu/en/cve/CVE-2026-54371"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-54371.svg?lang=en" alt="CVE-2026-54371 – NEOSEC Intel" height="20"></a>