CVE-2016-20026: ZKTeco Inc ZKTeco Zkbiosecurity

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

ZKTeco ZKBioSecurity 3.0 contains hardcoded credentials in the bundled Apache Tomcat server that allow unauthenticated attackers to access the manager application. Attackers can authenticate with hardcoded credentials stored in tomcat-users.xml to upload malicious WAR archives containing JSP applications and execute arbitrary code with SYSTEM privileges.

Affected products

• ZKTeco Inc ZKTeco Zkbiosecurity: version 3.0.1.0_R_230 only

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