CVE-2026-24881

🔴 HIGH

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....

Published
Jan 27, 2026
Last Modified
Jan 29, 2026
Views
22
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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.

CVSS Scores

CVSS 3.1 8.1
8.1
HIGH
CVSS 2.0 8.1

Additional Information

Source
cve@mitre.org
State
Undergoing analysis

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