{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T09:24:51.285","vulnerabilities":[{"cve":{"id":"CVE-2023-4346","sourceIdentifier":"ics-cert@hq.dhs.gov","published":"2023-08-29T20:15:10.300","lastModified":"2024-11-21T08:34:53.987","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"\nKNX 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 interface with a network, an attacker with access to that network could interface with the KNX installation, purge all devices without additional security options enabled, and set a BCU key, locking the device. Even if a device is not connected to a network, an attacker with physical access to the device could also exploit this vulnerability in the same way. \n\n"},{"lang":"es","value":"Los dispositivos KNX que utilizan la autorización de conexión KNX y admiten la Opción 1 son, según la implementación, vulnerables a ser bloqueados y los usuarios no pueden restablecerlos para obtener acceso al dispositivo. La función de clave BCU en los dispositivos se puede usar para crear una contraseña para el dispositivo, pero esta contraseña a menudo no se puede restablecer sin ingresar la contraseña actual. Si el dispositivo está configurado para interactuar con una red, un atacante con acceso a esa red podría interactuar con la instalación KNX, purgar todos los dispositivos sin opciones de seguridad adicionales habilitadas y configurar una clave BCU, bloqueando el dispositivo. Incluso si un dispositivo no está conectado a una red, un atacante con acceso físico al dispositivo también podría aprovechar esta vulnerabilidad de la misma manera.\n"}],"metrics":{"cvssMetricV31":[{"source":"ics-cert@hq.dhs.gov","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"ics-cert@hq.dhs.gov","type":"Secondary","description":[{"lang":"en","value":"CWE-645"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:knx:connection_authorization:-:*:*:*:*:*:*:*","matchCriteriaId":"F328E1CB-8666-4D06-B2BC-9532454AF906"}]}]}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-01","source":"ics-cert@hq.dhs.gov","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-01","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","US Government Resource"]}]}}]}