CVE-2023-38951
ZKTeco
- Published
- 3 August 2023
- Last modified
- 9 July 2026
- CVSS
- 9.8 v3.1
- Severity
- critical
- EPSS
- 3.3% (88th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-22
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 3.3% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Biotime | ZKTeco | unknown | 8.5.4, 8.5.5, < 8.5.4, < 9.0.1 +3 |
References
- https://claroty.com/team82/disclosure-dashboard/cve-2023-38951 third-party
- https://github.com/omair2084/biotime-rce-8.5.5/blob/main/biotime_enum.py
- https://krashconsulting.com/fury-of-fingers-biotime-rce/
- https://www.zkteco.com/en/ZKBio_Time/ZKBioTime#Download
- https://www.zkteco.com/en/announcement
- https://claroty.com/team82/disclosure-dashboard/cve-2023-38951 third-party
- https://sploitus.com/exploit?id=PACKETSTORM:177859
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.