CSRF in Zkteco Inc. Zkbiosecurity
CVE-2016-20028
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (9.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Zkteco Inc. Zkbiosecurity — versions 3.0.1.0_R_230
Weakness classification (CWE)
References
- Zero Science Lab Disclosure (third-party-advisory)
- CXSecurity (third-party-advisory)
- IBM X-Force Exchange (vdb-entry)
- Packet Storm Security (exploit)
- Reference (exploit)
- VulnCheck Advisory: ZKTeco ZKBioSecurity 3.0 Cross-Site Request Forgery Superadmin (third-party-advisory)
Frequently asked questions
- What is CVE-2016-20028?
- CVE-2016-20028 is a medium-severity vulnerability in Zkteco Inc. Zkbiosecurity, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-03-16.
- How severe is CVE-2016-20028?
- Medium severity. CVSS v3 base score is 4.3 out of 10.