CVE-2023-4346
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
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EPSS — probability of exploitation (30 days)
1.3%
69.0th percentile
CISA KEV
Listed
Added 2026-07-15 · patch by 2026-07-29
Weakness / dates
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Published — · modified —
Timeline
- 2026-07-15 — Added to CISA KEV (actively exploited)
- 2026-07-29 — CISA patch-by deadline
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.