Vulnerability · Published Jun 23, 2026 · Assigned by mitre
CVE-2026-57062
Low 2.9
In plain English
A low-severity security flaw in GnuPG from GnuPG. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)2.9Low
Exploit odds (30 days)0.1%top 95.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gnupg2 | no fix listed | DEBIAN-CVE-2026-57062 |
| Debian:13 | gnupg2 | no fix listed | DEBIAN-CVE-2026-57062 |
| Debian:14 | gnupg2 | 2.4.9-5 | DEBIAN-CVE-2026-57062 |
| Ubuntu:24.04:LTS | gnupg2 | 2.4.4-2ubuntu17.6 | UBUNTU-CVE-2026-57062 |
| Ubuntu:24.04:LTS | gnupg2 | 2.4.4-2ubuntu17.6 | USN-8720-1 |
| Ubuntu:25.10 | gnupg2 | no fix listed | UBUNTU-CVE-2026-57062 |
| Ubuntu:26.04:LTS | gnupg2 | 2.4.8-4ubuntu3.1 | USN-8720-1 |
| Ubuntu:26.04:LTS | gnupg2 | 2.4.8-4ubuntu3.1 | UBUNTU-CVE-2026-57062 |
Affected products (as reported)
Weakness: CWE-1284 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N