CVE-2016-20026
ZKTeco ZKBioSecurity 3.0 Hardcoded Credentials Remote Code Execution
- State
- Published
- Severity
- 9.3 Critical
- Published
- Mar 15, 2026
- Updated
- Jul 28, 2026
- Reserved
- Mar 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-798 Use of Hard-coded Credentials
Affected Products
| Product | Versions |
|---|---|
ZKTeco ZKBioSecurityZKTeco Inc. |
|
References
- Zero Science Lab Disclosurethird-party-advisory
- CXSecuritythird-party-advisory
- IBM X-Force Exchangevdb-entry
- Packet Storm Securityexploit
- Referenceexploit
- VulnCheck Advisory: ZKTeco ZKBioSecurity 3.0 Hardcoded Credentials Remote Code Executionthird-party-advisory
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