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CVE-2025-15281
wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory
Description

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.

INFO

Published Date :

Jan. 20, 2026, 2:16 p.m.

Last Modified :

Jan. 20, 2026, 6:16 p.m.

Remotely Exploit :

No

Source :

3ff69d7a-14f2-4f67-a097-88dee7810d18
Affected Products

The following products are affected by CVE-2025-15281 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Gnu glibc
: Total Affected Vendor : 1 | Products : 1
Solution
Update the GNU C Library to fix memory corruption when using WRDE_REUSE and WRDE_APPEND.
  • Update the GNU C Library to a patched version.
  • Avoid using WRDE_REUSE with WRDE_APPEND.
  • Review memory handling in wordexp calls.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-15281.

URL Resource
https://sourceware.org/bugzilla/show_bug.cgi?id=33814
http://www.openwall.com/lists/oss-security/2026/01/20/3
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-15281 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-15281 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-15281 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-15281 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Jan. 20, 2026

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2026/01/20/3
  • New CVE Received by 3ff69d7a-14f2-4f67-a097-88dee7810d18

    Jan. 20, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CWE CWE-908
    Added Reference https://sourceware.org/bugzilla/show_bug.cgi?id=33814
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.