Missing support for integrity check in KNX Update Tool (ABB) and KNX Update Tool (BJE) - CVE-2026-12705

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Main Vulnerability Database Vulnerabilities #VU138953

Missing support for integrity check in KNX Update Tool (ABB) and KNX Update Tool (BJE) - CVE-2026-12705

Published: July 21, 2026


Vulnerability identifier: #VU138953
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-12705
CWE-ID: CWE-353
Exploitation vector: Adjecent network
Exploit availability: No public exploit available
Vendor: ABB
Affected software:
KNX Update Tool (ABB)
KNX Update Tool (BJE)

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing protection of the integrity of the firmware image. A remote user on the local network can bypass integrity mechanism of KNX-device FW-files.


How to mitigate CVE-2026-12705

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Sources