# CVE-2023-4346: A KNX Association KNX Protocol Connection Authorization Option 1 bug is being used in attacks

Status: Being used now (CISA KEV, added 2026-07-15)
Who: 
Do this: 

## Agent prompt (read-only)
Read-only check, change nothing, send nothing anywhere.
Is KNX Association KNX Protocol Connection Authorization Option 1 (CVE-2023-4346) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2023-4346. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

## Official description
KNX Association KNX Protocol Connection Authorization Option 1 contains an overly restrictive account lockout mechanism vulnerability that could allow an attacker to purge all devices without additional security options enabled and set a BCU key to lock the device. 

## Sources
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-01
- https://nvd.nist.gov/vuln/detail/CVE-2023-4346
- https://nvd.nist.gov/vuln/detail/CVE-2023-4346

Generated by isitexploited.org from public sources. Verify version numbers against the vendor before acting.