CVE-2026-57062: CMS (Cryptographic Message Syntax) parsing in gpgsm in GnuPG through 2.5.20 mishandles the CMS format for AES-GCM because aes-ICVlen is supposed to be 12 bytes but 4 bytes is accepted. NOTE: this is related to CVE-2026-34182.

Overview

Severity

Low (CVSS 2.9)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-Jun

Released

2026-06-27

Last Updated

2026-07-01

EPSS Score

0.14% (percentile: 4.0%)

Affected Products (2)

Other

• 20904-17084
• 21526-17084

Revision History

• 2026-06-27: Information published.
• 2026-06-29: Information published.
• 2026-07-01: Information published.
• 2026-07-01: Information published.