CVE-2016-20026
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductZKTeco ZKBioSecurity
PublishedMar 16, 2026
First seenMar 16, 2026
Weakness typeCWE-798Hard-coded credentials
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ZKTeco Inc. ZKTeco ZKBioSecurity | 3.0.1.0_R_230 | — |
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