CVE-2016-20027Public exploitNetwork attack vector

Browser script execution via unsanitized filter reflection

Published Mar 15, 2026 · Updated Mar 15, 2026

Reflected XSS in ZKTeco ZKBioSecurity 3.0.1.0_R_230 allows remote attackers to run script in a user's browser via crafted URLs. The authRoleAction!getAll.action and authUserAction!getAll.action handlers return the filter:authGroupSet.id parameter without sanitization. Successful exploitation requires a user to open the crafted URL and lets the injected code read or modify data exposed to that browser session.

CVSS severity5.1
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in ZKTeco ZKBioSecurity 3.0.1.0_R_230 allows remote attackers to run script in a user's browser via crafted URLs. The authRoleAction!getAll.action and authUserAction!getAll.action handlers return the filter:authGroupSet.id parameter without sanitization. Successful exploitation requires a user to open the crafted URL and lets the injected code read or modify data exposed to that browser session.

The record

CVE
CVE-2016-20027
Published
Mar 15, 2026
Updated
Mar 15, 2026
Vendor
ZKTeco
Product
ZKBioSecurity
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.1.0_R_230

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ZKTeco · ZKBioSecurityversion=3.0.1.0_R_230

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo