CVE-2026-12705 Integrity mechanism of KNX-device FW-files can be bypassed in ABB Update Tool
Attackers can bypass firmware integrity checks in ABB KNX Update Tool, allowing installation of unverified firmware on KNX devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12705?
CVE-2026-12705 is a medium-severity vulnerability in KNX Update Tool (ABB), published on 17 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Missing support for integrity check vulnerability in ABB KNX Update Tool (ABB), ABB KNX Update Tool (BJE).
This issue affects KNX Update Tool (ABB): through 2.0.175; KNX Update Tool (BJE): through 2.0.175.
Weakness: CWE-353
Which versions are affected by CVE-2026-12705?
How do I fix CVE-2026-12705?
No fix has been published for CVE-2026-12705 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-12705 being exploited?
There is no known exploitation of CVE-2026-12705 in the wild and no public exploit code.
Sources
Also known as GHSA-gvmv-64wv-hj9r.