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PatchSiren cyber security CVE debrief

CVE-2016-20028 ZKTeco Inc. CVE debrief

CVE-2016-20028 is a medium-severity cross-site request forgery (CSRF) vulnerability in ZKTeco ZKBioSecurity 3.0. The vulnerability 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.

Vendor
ZKTeco Inc.
Product
ZKTeco ZKBioSecurity
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-16
Original CVE updated
2026-06-08
Advisory published
2026-03-16
Advisory updated
2026-06-08

Who should care

Administrators and users of ZKTeco ZKBioSecurity 3.0 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability has a CVSS score of 5.3 and is classified as medium severity. The CVSS vector is 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

medium

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability.
  • Implement CSRF protection mechanisms to prevent similar attacks.
  • Educate users about the risks of visiting malicious websites and the importance of being cautious when clicking on links.

Evidence notes

The vulnerability was reported by an unknown vendor and has a low confidence level. The evidence includes references from various sources, including Cxsecurity, Xforce, Packetstormsecurity, Exploit-db, Vulncheck, and Zero Science.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-20028 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-20028

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2016-20028 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-20028

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.