Vulnerability Monitor

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CVE-2025-30258

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."

Published

2025-03-19T20:15:20.140

Last Modified

2025-10-16T16:53:07.557

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 2.7 (LOW)

Weaknesses

Type: Secondary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnupg	gnupg	< 2.4.8	Yes
Application	gnupg	gnupg	< 2.5.5	Yes

References

https://dev.gnupg.org/T7527 Exploit, Issue Tracking ([email protected])
https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158 Issue Tracking ([email protected])
https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html Mailing List, Release Notes, Vendor Advisory ([email protected])