CVE-2016-20026 - CVE House
Back to Database
Status published Critical CVE-2016-20026

ZKTeco ZKBioSecurity 3.0 Hardcoded Credentials Remote Code Execution

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2016-20026

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • LiquidWorm as Gjoko Krstic of Zero Science Lab

Affected Vendor

ZKTeco Inc.

View all reports →

Affected Software

ZKTeco ZKBioSecurity
Vulnerable Versions:
3.0.1.0_R_230

Timeline

Official Publish: March 15th, 2026
Last Modified: June 8th, 2026
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)