SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-38950

ZKTeco BioTime Path Traversal Vulnerability

KEVHIGH 7.5EPSS 84.7%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 9 June 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

A path traversal vulnerability in the iclock API of ZKTeco BioTime v8.5.5 allows unauthenticated attackers to read arbitrary files via supplying a crafted payload. This vulnerability was fixed in version 9.0.120240617.19506 of ZKBioTime.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
84.70% probability · 100th percentile
CISA KEV
Listed 19 May 2025 · due 9 June 2025
Weakness
CWE-22
Affected
zkteco/biotime
Source
cve@mitre.org

CISA notes

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://www.zkteco.com/en/Security_Bulletinsibs ; https://nvd.nist.gov/vuln/detail/CVE-2023-38950

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.