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

Summary

CVECVE-2026-12705
StatePUBLISHED
AssignerABB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-17 15:16:45 UTC
Updated2026-07-17 18:10:29 UTC
DescriptionMissing 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.

Risk And Classification

Primary CVSS: v4.0 5.9 MEDIUM from [email protected]

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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.000980000 probability, percentile 0.009620000 (date 2026-07-20)

Problem Types: CWE-353 | CWE-353 CWE-353 Missing support for integrity check


VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.9MEDIUMCVSS: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:X/C...
4.0CNACVSS5.9MEDIUMCVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
3.1[email protected]Secondary6.4MEDIUMCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1CNACVSS6.4MEDIUMCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
High
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ABB KNX Update Tool ABB affected 2.0.175 custom Not specified
CNA ABB KNX Update Tool BJE affected 2.0.175 custom Not specified

References

ReferenceSourceLinkTags
search.abb.com/library/Download.aspx [email protected] search.abb.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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