CVE-2016-20030 - Vulnerability Analysis

Overview

ZKTeco ZKBioSecurity 3.0 contains a user enumeration vulnerability caused by differing responses to partial username inputs in authLoginAction!login.do, letting unauthenticated attackers discover valid usernames, exploit requires no authentication.

Severity & Score

Impact

Unauthenticated attackers can discover valid usernames, aiding further targeted attacks like brute force or phishing.

Mitigation

Update to the latest version or apply vendor patches addressing user enumeration.

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/116485
• https://packetstormsecurity.com/files/138573
• https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-user-enumeration-via-authloginaction
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5366.php

Social Media Activity(1 post)

Yazoul - Cybersecurity Alerts

@Matchbook3469

Mar 17, 2026

🔴 New security advisory: CVE-2016-20030 affects multiple systems. • Impact: Remote code execution or complete system compromise possible • Risk: Attackers can gain full control of affected systems • Mitigation: Patch immediately or isolate affected systems Full breakdown: https://www.yazoul.net/advisory/cve/cve-2016-20030-zkteco-zkbiosecurity-3-0-user-enumeration #Cybersecurity #SecurityPatching #HackerNews

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• Vulnerability Intelligence Dashboard
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