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.
Metrics
Affected Vendors & Products
References
History
Thu, 12 Feb 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Gpg4win
Gpg4win gpg4win |
|
| CPEs | cpe:2.3:a:gnupg:gnupg:*:*:*:*:-:*:*:* cpe:2.3:a:gpg4win:gpg4win:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Gpg4win
Gpg4win gpg4win |
Wed, 28 Jan 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | GnuPG: GnuPG: Remote code execution and denial of service via crafted CMS EnvelopedData message | |
| References |
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| Metrics |
threat_severity
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threat_severity
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Tue, 27 Jan 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 27 Jan 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| First Time appeared |
Gnupg
Gnupg gnupg |
|
| Weaknesses | CWE-121 | |
| CPEs | cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Gnupg
Gnupg gnupg |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-01-27T20:08:54.449Z
Reserved: 2026-01-27T18:36:56.490Z
Link: CVE-2026-24881
Updated: 2026-01-27T20:08:50.431Z
Status : Analyzed
Published: 2026-01-27T19:16:16.517
Modified: 2026-02-12T18:15:38.923
Link: CVE-2026-24881