XSS in Zkteco Inc. Zkbiosecurity
CVE-2016-20027
ZKTeco ZKBioSecurity 3.0 contains multiple reflected cross-site scripting vulnerabilities that allow attackers to execute arbitrary HTML and script code by injecting malicious payloads through unsanitized parameters in multiple scripts. Attackers can craft malicious URLs with XSS payloads in vulnerable parameters to execute scripts in a user's browser session within the context of the affected application.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.4% 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)
- VulnCheck Advisory: ZKTeco ZKBioSecurity 3.0 Multiple Reflected XSS Vulnerabilities (third-party-advisory)
Frequently asked questions
- What is CVE-2016-20027?
- CVE-2016-20027 is a medium-severity vulnerability in Zkteco Inc. Zkbiosecurity, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-16.
- How severe is CVE-2016-20027?
- Medium severity. CVSS v3 base score is 6.1 out of 10.