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CVE-2026-24881

nvd nist
Published: Jan 27, 2026Modified: Feb 12, 2026

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8.1
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.2 / Impact: 5.9
Source: MITRE (Secondary)

Description

In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that could lead to remote code execution.

Affected (2)

Products: Gnupg: Gnupg · Gpg4win: Gpg4win
Gnupg
1 product
Gnupg
Gpg4win
1 product
Gpg4win
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Gnupg
From 2.5.13 to 2.5.17
Gpg4win
From 5.0.0 to 5.0.1

Related CWEs

CWE-121
Stack-based Buffer Overflow
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

References (2)

Source: cve@mitre.org
ExploitProduct
Source: cve@mitre.org
Mailing ListThird Party Advisory

Timeline

No history available yet.