CVE-2025-14104
Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
No known exploitation. EPSS puts it in the 8th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities writing to the password database.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 8th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
16 events over 270 days, from the signal feeds we watch.
- Patch availableworkaround available, record updated
- Patch availableworkaround available, record updated
- Patch availableworkaround available, record updated
- Patch availableworkaround available, record updated
- OpenVAS check added
- Publishedweakness classified, att&ck mapped
Affected products
- Red Hat Enterprise Linux 10Operating Systems / linux-distro
- Red Hat Ceph Storage 7Databases / data-warehouse-analytics
- Red Hat Ceph Storage 8Databases / data-warehouse-analytics
- Red Hat Ceph Storage 9Databases / cache-message-queue
- Red Hat Hardened ImagesOperating Systems / linux-distro
- Red Hat Insights proxy 1.5Enterprise Software / itsm-monitoring
- Red Hat Update Infrastructure 5Operating Systems / linux-distro
- Red Hat OpenShift Container Platform 4Cloud & SaaS / container-orchestration
And 4 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Scored 6.1 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required LowRequires basic user-level privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality LowSome restricted information is disclosed, but limited in scope
- Integrity NoneNo integrity impact
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
References in the record
- access.redhat.com/errata/RHSA-2026:1696
- access.redhat.com/errata/RHSA-2026:1852
- access.redhat.com/errata/RHSA-2026:1913
And 14 more references. See all after sign-in
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