CISA added CVE-2023-4346 affecting KNX Association KNX Protocol Connection Authorization Option 1 to its Known Exploited Vulnerabilities catalog on 2026-07-15. Federal agencies must finish remediation by 2026-07-29. The overly restrictive account lockout mechanism could let attackers purge devices and set a BCU key when extra security options remain disabled, so organizations must apply vendor mitigations under BOD 26-04.
The flaw could allow an attacker to purge all devices without additional security options enabled and set a BCU key to lock the device.
It allows unauthenticated takeover of Oracle Payments.
Organizations running Oracle E-Business Suite must treat this as an immediate priority given confirmed exploitation and the tight three-day remediation window for federal systems.
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