Vulnerability record · CVE-2025-15281 · published 20 January 2026

CVE-2025-15281: Gnu glibc use of uninitialized resource vulnerability

Gnu · Glibc

Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

7.5 CVSS 3.1 High EPSS 0.50% · top 59.7% CWE-908 · Use of uninitialized resource

7.5CVSS 3.1 base score

0.50%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Glibc Gnu

References

Link	Tags
https://sourceware.org/bugzilla/show_bug.cgi?id=33814	Issue TrackingPatch
http://www.openwall.com/lists/oss-security/2026/01/20/3	Mailing ListThird Party Advisory

Track CVE-2025-15281 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-15281), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.