CVE-2016-20024: ZKTeco Inc ZKTeco Zktime.net

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

ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.

Affected products

• ZKTeco Inc ZKTeco Zktime.net: version 3.0.1.6 only; version 3.0.1.5 (160622) only; version 3.0.1.1 (160216) only

Published 2026-03-16. Last modified 2026-06-17.