CVE-2016-20032Public exploitNetwork attack vector

Browser-session compromise via unsanitized holiday fields

Published Mar 15, 2026 · Updated Mar 15, 2026

Stored XSS in ZKTeco ZKAccess Security System 5.3.1 allows remote authenticated users to execute script in users' browsers. The holiday-creation handler at /data/iaccess/AccHolidays/new stores holiday_name and memo values without sanitizing them before returning them in a page. A low-privileged user can plant the payload, which runs when another user views the saved holiday and can read or alter data available to that browser session.

CVSS severity5.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in ZKTeco ZKAccess Security System 5.3.1 allows remote authenticated users to execute script in users' browsers. The holiday-creation handler at /data/iaccess/AccHolidays/new stores holiday_name and memo values without sanitizing them before returning them in a page. A low-privileged user can plant the payload, which runs when another user views the saved holiday and can read or alter data available to that browser session.

The record

CVE
CVE-2016-20032
Published
Mar 15, 2026
Updated
Mar 15, 2026
Vendor
ZKTeco
Product
ZKAccess Security System
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

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

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Is a vulnerable build present?

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

  1. Affected versionversion=5.3.12252

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ZKTeco · ZKAccess Security Systemversion=5.3.12252

Published CVSS scores

7.2VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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

Technologies

Your stack

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Your stack

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