CVE-2021-38679: QNAP Kazoo Server

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

An improper authentication vulnerability has been reported to affect QNAP NAS running Kazoo Server. If exploited, this vulnerability allows attackers to compromise the security of the system. We have already fixed this vulnerability in the following versions of Kazoo Server: Kazoo Server 4.11.22 and later

Affected products

• QNAP Kazoo Server: before 4.11.22 (fixed in 4.11.22)

Published 2022-02-11. Last modified 2026-06-17.