VULNERABILITY INTELLIGENCE
CVE-2016-20030
CVSS score9.3 CRITICAL
EPSS probability0.57%
CISA KEVNot currently listed
Published2026-03-16
Last modified2026-06-17
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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.
Weakness classification
- CWE-551: Incorrect Behavior Order: Authorization Before Parsing and Canonicalization