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.
CVSS Details
- CVSS 3.1 Base Score: 2.9
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade gnupg2-debuginfoUpgrade gnupg2-minimalUpgrade gnupg2-debugsourceUpgrade gnupg2-smime-debuginfoUpgrade gnupg2Upgrade gnupg2-minimal-debuginfoUpgrade gnupg2-smime | Jul 8, 2026 | Jun 23, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jun 23, 2026 |
| Ubuntu | — | Upgrade gpgsm | Sep 14, 2026 | Sep 3, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2026 | Jun 23, 2026 |
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