CVE-2022-20686

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An attacker could exploit these vulnerabilities by sending a malicious LLDP packet to an affected device. A successful exploit could allow the attacker to execute code on the affected device and cause LLDP to restart unexpectedly, resulting in a denial of service (DoS) condition."}, {"lang": "es", "value": "M\u00faltiples vulnerabilidades en la funcionalidad del Link Layer Discovery Protocol (LLDP) del firmware de Cisco ATA 190 Series Analog Telephone Adapter podr\u00edan permitir que un atacante remoto no autenticado ejecute c\u00f3digo arbitrario en un dispositivo afectado y provoque que el servicio LLDP se reinicie. Estas vulnerabilidades se deben a la falta de validaci\u00f3n de longitud de ciertos campos de encabezado de paquetes LLDP. Un atacante podr\u00eda aprovechar estas vulnerabilidades enviando un paquete LLDP malicioso a un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante ejecutar c\u00f3digo en el dispositivo afectado y provocar que LLDP se reinicie inesperadamente, lo que resultar\u00eda en una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS)."}], "id": "CVE-2022-20686", "lastModified": "2026-06-17T04:24:51.567", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "psirt@cisco.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-12-12T09:15:12.197", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-GEZYVvs"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ata19x-multivuln-GEZYVvs"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-130"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-1284"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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