SARA / Free Tools / CVE / CVE-2023-4346

CVE-2023-4346 — KNX devices that use KNX Connection Authorization and support Option 1 are, depe

KNX devices that use KNX Connection Authorization and support Option 1 are, depending on the implementation, vulnerable to being locked and users being unable to reset them to gain access to the device. The BCU key feature on the devices can be used to create a password for the d

CVSS
7.5 HIGH
EPSS
48.00% (top 61.60%)
CWE
Published
2023-08-29T20:15:10.300
Last modified
2026-07-16T05:16:16.603
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA KEV — Actively Exploited
Added to KEV
2026-07-15
BOD 22-01 due
Ransomware use
Unknown

01What is this vulnerability?

KNX devices that use KNX Connection Authorization and support Option 1 are, depending on the implementation, vulnerable to being locked and users being unable to reset them to gain access to the device. The BCU key feature on the devices can be used to create a password for the device, but this password can often not be reset without entering the current password. If the device is configured to…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2026-07-15. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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