Vulnerability Details CVE-2026-24881
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.4%
CVSS Severity
CVSS v3 Score 8.1