CVE-2016-20030
CriticalCVSS 9.8Summary
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.
Risk Assessment
Attackers can exploit this vulnerability to identify valid user accounts, potentially leading to further attacks on the system.
Recommendation
It is recommended to implement mechanisms that limit application responses to invalid login attempts and to monitor login attempts.
Original NVD description (English source)
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.