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 buffe
CVSS
8.1
High
EPSS
1.7%
p75
KEV
—
Exploit Today
23
0-100
Published: Jan 27, 2026 · Last modified: Jul 15, 2026 · CWE-121
1.7%EPSS · 30 days1.7%
2026-06-302026-07-16
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.
- dev.gnupg.orghttps://dev.gnupg.org/T8044
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2026/01/27/8
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-24881
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2433480
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24881.json
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2025-510878.6 HIG94.0%
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