vulnerability

Ubuntu: (Multiple Advisories) (CVE-2025-30258): GnuPG vulnerability

Severity
1
CVSS
(AV:L/AC:H/Au:N/C:N/I:N/A:P)
Published
Mar 19, 2025
Added
Apr 4, 2025
Modified
Apr 16, 2026

Description

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."

Solutions

ubuntu-pro-upgrade-gnupgubuntu-pro-upgrade-gnupg2ubuntu-pro-upgrade-gpgubuntu-pro-upgrade-gpgv2ubuntu-upgrade-gnupgubuntu-upgrade-gnupg2ubuntu-upgrade-gpg
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.