CVEvulnerability

CVE-2026-24881

9.8 CRITICAL Published 2026-01-27 Modified 2026-07-15 Official page ↗
Status
Modified
Published
2026-01-27
Last modified
2026-07-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-121

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 configurations

• gnupg gnupg (>= 2.5.13 < 2.5.17) • gpg4win gpg4win (>= 5.0.0 < 5.0.1)

Related

Weakness · CWE (1)

  • CWE-121 Stack-based Buffer Overflow weakness

References