CVE-2025-14104 | Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames

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.

Published: 2025-12-05 Last update: 2026-06-29 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-14104 is rated Low Risk (27.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.18%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-14104

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.18% +0.16%
2 2025-12-06 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-14104

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.1 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 4.2 [email protected]

Weakness enumeration for CVE-2025-14104

GitHub Security Advisory for CVE-2025-14104

GHSA-hrx4-rccm-xj6c · Severity: medium — A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing...

OS Trackers for CVE-2025-14104

vendor priority summary link
debian unimportant CVE-2025-14104 unimportant priority: Debian including 1 source packages (util-linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2025-14104
redhat medium — https://access.redhat.com/security/cve/CVE-2025-14104
suse medium CVE-2025-14104 severity moderate: SUSE including 608 source package names (1.1.0-1.10:libblkid1-2.40.4-150700.4.3.1, 1.1.0-1.10:libfdisk1-2.40.4-150700.4.3.1, …), 2074 product×package rows across 229 product lines (Container private-registry/harbor-registry, Container private-registry/harbor-registryctl, … (229 product lines)): Fixed 1818, Known Affected 231, First Fixed 24, Known Not Affected 1. https://www.suse.com/security/cve/CVE-2025-14104/
ubuntu medium CVE-2025-14104 medium priority: Ubuntu including 1 source packages (util-linux), 9 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): needs-triage 4, not-affected 4, released 1. https://ubuntu.com/security/CVE-2025-14104

Affected software / configurations for CVE-2025-14104

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-14104

cvelogic Threat Intelligence