CVE-2024-13966: ZKTeco BioTime

High severity, CVSS 7.3. EPSS: 0.4% chance of exploitation in the next 30 days.

ZKTeco BioTime allows unauthenticated attackers to enumerate usernames and log in as any user with a password unchanged from the default value '123456'. Users should change their passwords (located under the Attendance Settings tab as "Self-Password").

Affected products

• ZKTeco BioTime: before 9.0.4 (fixed in 9.0.4)

Published 2025-05-27. Last modified 2026-06-17.