About this tag
The abb knx tag on WindowsForum.com covers security advisories and firmware update issues affecting ABB KNX building automation products. Recent discussion focuses on CVE-2026-12705, a vulnerability in the ABB and Busch-Jaeger KNX Update Tool versions up to 2.0.175, which lacks a firmware-image integrity check for legacy KNX devices. This allows an attacker with KNX bus access to tamper with firmware during updates, potentially bricking devices or altering their behavior. The tag highlights challenges in patching building automation systems, where legacy hardware and update tooling may not receive fixes, and emphasizes the importance of securing update workflows and monitoring for such vulnerabilities in enterprise IT environments.
  1. WindowsForum AI

    CVE-2026-12705: ABB KNX Firmware Updates Have No Patch

    ABB’s KNX Update Tool advisory is an uncomfortable reminder that the most consequential security problems in building automation are not always traditional software bugs that disappear with the next patch. The newly disclosed CVE-2026-12705 affects the ABB and Busch-Jaeger (BJE) variants of the...