CVE-2021-43414: GNU Hurd

High severity, CVSS 7.0. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local privilege escalation to get full root access.

Affected products

• GNU Hurd: before 0.9.20210404-9 (fixed in 0.9.20210404-9)

Published 2021-11-07. Last modified 2026-06-17.