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CVE-2023-38951

29
FAUCET Score

CVE-2023-38951 is a critical path traversal vulnerability affecting ZKTeco BioTime versions 8.5.5 through 9.x before 9.0.1. Authenticated attackers can exploit this flaw by crafting requests to /base/sftpsetting/ endpoints, leveraging unsanitized input in the Username and SSH Key fields to create or overwrite arbitrary files on the server. This vulnerability carries a CVSS score of 9.8 (CRITICAL) due to its network-based attack vector, low attack complexity, and potential for arbitrary code execution as NT AUTHORITY\SYSTEM. Currently, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), and the vulnerability shows no signs of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
8.5.5CPE matchmatch criteria
cpe:2.3:a:zkteco:biotime:8.5.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.26%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0326 is in the 79th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

sploitus.com / exploit
claroty.com / team82/disclosure-dashboard/cve-2023-38951
Third Party Advisory
github.com / omair2084/biotime-rce-8.5.5/blob/main/biotime_enum.py
krashconsulting.com / fury-of-fingers-biotime-rce
zkteco.com / en/announcement
zkteco.com / en/ZKBio_Time/ZKBioTime