CVE-2026-118131 CVE-2026-118131

CriticalCVSS 9.8 EPSS 0.43%

Published: 2026-10-27 19:23
Updated: 2026-11-04 20:17
Exploit status: No public exploit known

Description

GnuPG (version 2.5.21) for Windows contains a vulnerability where default Discretionary Access Control List (DACL) inheritance on the C:\ProgramData directory allows members of the BUILTIN\Users group to create arbitrary subdirectories under this path. An attacker with low-privilege access can create the expected GnuPG configuration directory and inject malicious configuration files consumed by GnuPG components. This can result in code execution within the security context of the victim user.

Affected products

Product	Affected versions	Fixed in
GnuPG	= 2.5.21	No fix listed
ubuntu/gnupg2(Ubuntu:22.04)	All versions	No fix listed
ubuntu/gnupg2(Ubuntu:24.04)	All versions	No fix listed
ubuntu/gnupg2(Ubuntu:26.04)	All versions	No fix listed
ubuntu/gnupg2(Ubuntu:26.10)	All versions	No fix listed
azure linux gnupg2(Azure Linux:3.0)	All versions	No fix listed

References

MSRC Security Update Guide vendor-advisory
Release Notes vendor-advisory
atos.net
Ubuntu CVE tracker vendor-advisory
www.cve.org
Debian Security Tracker CVE-2026-118131 vendor-advisory

CVSS v3.1

9.8 Critical

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

All scores (3)

v3.1 9.8 · ubuntu
v3.1 5.3 · microsoft
v3.1 9.8 · cisa-adp

Weakness & likelihood

EPSS (exploitation probability, 30 days): 0.43% (percentile 37.7)
CWE: CWE-379 Creation of Temporary File in Directory with Insecure Permissions CWE-427 Uncontrolled Search Path Element CWE-732 Incorrect Permission Assignment for Critical Resource

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.