CVE-2026-57062CWE-1284

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…

Low · published June 23, 2026

CVSS v3.1
2.9
EPSS
0%
Percentile
3.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.9 · LOW
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00149 · 3.8th percentile
Weakness
CWE-1284 · Improper Validation of Specified Quantity in Input
Published
2026-06-23T17:26Z
EPSS history
Timeline
  • 23 JUN 17:26Z
    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…
    cvelistv5