CVE-2025-30258

4.7 mediumEPSS 0.2%

Medium (4.7) in gnupg gnupg. EPSS 0.2% chance of exploitation in the next 30 days.

In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."

Severity

CVSS 3.1

4.7 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWE: CWE-754
Published: 2025-03-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

gnupg:gnupg

References

https://dev.gnupg.org/T7527
https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html

Check your stack JSON