CVE-2016-20030

Published: Mar 16, 2026Modified: Jun 8, 2026Deferred

9.3

Vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

Description

ZKTeco ZKBioSecurity 3.0 contains a user enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by submitting partial characters via the username parameter. Attackers can send requests to the authLoginAction!login.do script with varying username inputs to enumerate valid user accounts based on application responses.

Related CWEs

CWE-551

Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

If a web server does not fully parse requested URLs before it examines them for authorization, it may be possible for an attacker to bypass authorization protection.

References (4)

https://exchange.xforce.ibmcloud.com/vulnerabilities/116485

Source: disclosure@vulncheck.com

https://packetstormsecurity.com/files/138573

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-user-enumeration-via-authloginaction

Source: disclosure@vulncheck.com

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5366.php

Source: disclosure@vulncheck.com

Timeline

No history available yet.