PatchSiren cyber security CVE debrief
CVE-2016-20027 ZKTeco Inc. CVE debrief
CVE-2016-20027 is a reflected cross-site scripting (XSS) vulnerability in ZKTeco ZKBioSecurity 3.0. The vulnerability allows 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.
- Vendor
- ZKTeco Inc.
- Product
- ZKTeco ZKBioSecurity
- CVSS
- MEDIUM 5.1
- 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
Users of ZKTeco ZKBioSecurity 3.0 should apply patches or mitigations to prevent exploitation of this vulnerability.
Technical summary
The vulnerability has a CVSS score of 5.1 and a severity of MEDIUM. It was published on {cvePublishedAt} and last modified on {cveModifiedAt}.
Defensive priority
MEDIUM
Recommended defensive actions
- Apply patches or updates provided by the vendor to fix the reflected XSS vulnerabilities.
- Implement input validation and output encoding to prevent injection of malicious payloads.
- Use a web application firewall (WAF) to detect and prevent XSS attacks.
Evidence notes
The CVE record was obtained from {resourceLinkAnnotations.cve-org}. Additional information was obtained from {resourceLinkAnnotations.nvd}.
Official resources
CVE-2016-20027 was published on 2026-03-16T14:17:49.117Z and last modified on 2026-06-08T16:16:32.423Z.