CVE-2023-38951: ZKTeco BioTime

Critical severity, CVSS 9.8. EPSS: 3.3% chance of exploitation in the next 30 days.

ZKTeco BioTime 8.5.5 through 9.x before 9.0.1 (20240617.19506) allows authenticated attackers to create or overwrite arbitrary files on the server via crafted requests to /base/sftpsetting/ endpoints that abuse a path traversal issue in the Username field and a lack of input sanitization on the SSH Key field. Overwriting specific files may lead to arbitrary code execution as NT AUTHORITY\SYSTEM.

Affected products

• ZKTeco BioTime: version 8.5.5 only

Published 2023-08-03. Last modified 2026-07-09.