CVE-2016-20031

ZKTeco ZKBioSecurity 3.0 Local Authorization Bypass via visLogin.jsp

CVSS 6.8 MEDIUMEPSS 0.1%CWE-798

Vexday Risk Score

13Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 6.8EPSS 0.1%KEV nãoPoC —Patch —

Ciclo de vida

15 mar 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

ZKTeco ZKBioSecurity 3.0 contains a local authorization bypass vulnerability in visLogin.jsp that allows attackers to authenticate without valid credentials by spoofing localhost requests. Attackers can exploit the EnvironmentUtil.getClientIp() method which treats IPv6 loopback address 0:0:0:0:0:0:0:1 as 127.0.0.1 and authenticates using the IP as username with hardcoded password 123456 to access sensitive information and perform unauthorized actions.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Productos afectados

ZKTeco Inc. · ZKTeco ZKBioSecurity

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Referencias

https://cxsecurity.com/issue/WLB-2016090003 https://exchange.xforce.ibmcloud.com/vulnerabilities/116488 https://packetstormsecurity.com/files/138571 https://www.exploit-db.com/exploits/40327/https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-local-authorization-bypass-via-vislogin-jsp https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5367.php