🛡 CVE-2023-4346
KNX Association KNX Protocol Connection Authorization Option 1 Overly Restrictive Account Lockout Mechanism Vulnerability
KNX Association KNX Protocol Connection Authorization Option 1 CWE-645
Ransomware use
—
CISA KEV
EPSS
0.9%
Low · 56th pct
Added to KEV
2026-07-15
CISA
Remediate by
2026-07-29
⚠ OVERDUE
CWE
CWE-645
weakness
📈 EPSS exploit probability
0.9%
FIRST EPSS — 30-day probability of exploitation in the wild · band Low · higher than 56% of all scored CVEs
⚠ KEV remediation overdue
CISA required federal remediation by 2026-07-29. This exploited vulnerability is past its Binding Operational Directive 22-01 due date — prioritize patch/mitigation and hunt for exploitation.
📄 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 BC
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