CISA KEV · Known exploitedHigh

CVE-2023-38950

biotime

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
7.5
EPSS
84.7%
99.7% percentile
CISA KEV
Listed
Published
2023.08.04
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability84.7%
Technical severityCVSS 7.5

Vulnerability overview

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.

Affected product and versions

Product
biotime
Affected versions
< 9.0.1
Fixed versions
9.0.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Due date: 2025.06.09
  1. 1
    Identify

    Confirm that biotime and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
CWE-22
KEV added
2025.05.19
Ransomware use
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