ZKTeco ZKBio CVSecurity 6.1.1 is vulnerable to Directory Traversal via photoBase64. An unauthenticated user can download local files from the server. NOTE: Third parties have indicated other versions are also vulnerable including up to 6.4.1.
https://github.com/mrojz/ZKT-Bio-CVSecurity/blob/main/CVE-2024-35431.md