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Change History

{"timestamp":"2026-06-23T17:35:24.722258Z","id":"CVE-2026-57062","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

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.

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

CWE-1284

https://blog.calif.io/p/how-to-format-a-ciphertext

https://www.gnupg.org/download/

[{"vendor":"GnuPG","product":"GnuPG","defaultStatus":"unknown","versions":[{"version":"0","lessThanOrEqual":"2.5.20","versionType":"semver","status":"affected"}]}]