---
id: CVE-2026-4293
title: "The affected\_Kieback & Peter DDC building controllers\_are vulnerable to cross-site scripting, enabling JavaScript to be executed by the victim's browser, which allows the attacker to control the browser."
summary: "The affected\_Kieback & Peter DDC building controllers\_are vulnerable to cross-site scripting, enabling JavaScript to be executed by the victim's browser, which allows the attacker to control the browser."
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-79
published: '2026-05-20'
updated: '2026-07-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-4293'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-139-05.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-139-05'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
epss: 0.00271
epssPercentile: 0.19623
ingestedAt: '2026-07-23T12:17:55.169Z'
---

## Overview

The affected Kieback & Peter DDC building controllers are vulnerable to cross-site scripting, enabling JavaScript to be executed by the victim's browser, which allows the attacker to control the browser.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.