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CVE-2025-15281

29
FAUCET Score

CVE-2025-15281 describes a vulnerability in the GNU C Library (glibc) versions 2.0 through 2.42, where improper use of wordexp with WRDE_REUSE and WRDE_APPEND can lead to the return of uninitialized memory, potentially causing a process abortion upon subsequent calls to wordfree. This is a high-severity vulnerability (CVSS 7.5) with a network attack vector and low attack complexity, allowing an unauthenticated attacker to achieve a denial of service. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness and potential future interest.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0, < 2.43CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
>= 2.0, <= 2.42CPE match
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
35.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 15th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (11)

microsoftpatch availablevia msrc
Product: 20895-17084Fixed in: 2.38-18
microsoftpatch availablevia msrc
Product: azl3 glibc 2.38-18 on Azure Linux 3.0Fixed in: 2.38-18
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: glibc-0:2.34-231.el9_7.10
View patch
redhatpatch availablevia redhat_api
Product: Cost Management 4Fixed in: costmanagement/costmanagement-metrics-rhel9-operator:sha256:7424ae28625701b1441987b0457100505e273b2cbcb087bf0c046d7b2cc596c7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: glibc
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: rhcos
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-glibc
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: glibc

Vendor Advisories (2)

redhatCVE-2025-15281Low

glibc: wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory

Jan 20, 2026
microsoft2026-Jan/CVE-2025-15281Moderate

wordexp with WRDE_REUSE and WRDE_APPEND may return uninitialized memory

Jan 13, 2026

References

sourceware.org / bugzilla/show_bug.cgi
Issue TrackingPatch
openwall.com / lists/oss-security/2026/01/20/3
Mailing ListThird Party Advisory