CVE-2003-0255: GNU Privacy Guard

High severity, CVSS 10.0. EPSS: 6.6% chance of exploitation in the next 30 days.

The key validation code in GnuPG before 1.2.2 does not properly determine the validity of keys with multiple user IDs and assigns the greatest validity of the most valid user ID, which prevents GnuPG from warning the encrypting user when a user ID does not have a trusted path.

Affected products

• GNU Privacy Guard: up to and including 1.2.1

Published 2003-05-27. Last modified 2026-06-16.