CVE-2023-38951 — ZKTeco BioTime 8
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 sani
Published
2023-08-03T23:15:11.363
Last modified
2026-07-09T01:18:33.267
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
01What is this vulnerability?
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.
02Affected products
No structured affected-product list available — see references below for vendor advisories.
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-08-03T23:15:11.363
- Last modified: 2026-07-09T01:18:33.267
09References
- claroty.com — https://claroty.com/team82/disclosure-dashboard/cve-2023-38951
- github.com — https://github.com/omair2084/biotime-rce-8.5.5/blob/main/biotime_enum.py
- krashconsulting.com — https://krashconsulting.com/fury-of-fingers-biotime-rce/
- www.zkteco.com — https://www.zkteco.com/en/ZKBio_Time/ZKBioTime#Download
- www.zkteco.com — https://www.zkteco.com/en/announcement
- claroty.com — https://claroty.com/team82/disclosure-dashboard/cve-2023-38951
- sploitus.com — https://sploitus.com/exploit?id=PACKETSTORM:177859
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