CVE-2025-68972

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.

CVSS 3.1

4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS

0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-25)

CWE

CWE-347

Published

2025-12-27

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

Affected

• gnupg:gnupg

References

• https://gpg.fail/formfeed
• https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i
• https://news.ycombinator.com/item?id=46404339
• https://gpg.fail/formfeed

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