CVE-2025-68972

medium

Description

In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.

References

https://news.ycombinator.com/item?id=46404339

https://gpg.fail/formfeed

Details

Source: Mitre, NVD

Published: 2025-12-27

Updated: 2025-12-27

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

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

Severity: Medium