CVE-2026-12705 PUBLISHED

Integrity mechanism of KNX-device FW-files can be bypassed in ABB Update Tool

Assigner: ABB
Reserved: 19.06.2026 Published: 17.07.2026 Updated: 17.07.2026

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.

CVSS Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS Score: 6.4

CVSS 3.1

CVSS Vector: 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
CVSS Score: 5.9

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	None	Confidentiality	None
Attack Complexity	High	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Vendor	ABB
Product	KNX Update Tool (ABB)
Versions	Default: unaffected affected from 0 to 2.0.175 (incl.)

Vendor	ABB
Product	KNX Update Tool (BJE)
Versions	Default: unaffected affected from 0 to 2.0.175 (incl.)