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bypass Layer 3 and Layer 4 traffic filters. \r\n\r This vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by sending a crafted packet to the affected device. A successful exploit could allow the attacker to bypass the Layer 3 and Layer 4 traffic filters and inject a crafted packet into the network."}, {"lang": "es", "value": "Una vulnerabilidad en las funciones de filtrado de paquetes de Cisco IOS XE SD-WAN Software podr\u00eda permitir que un atacante remoto no autenticado eluda los filtros de tr\u00e1fico de Capa 3 y Capa 4. Esta vulnerabilidad se debe a condiciones inadecuadas de filtrado de tr\u00e1fico en un dispositivo afectado. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un paquete manipulado al dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante eludir los filtros de tr\u00e1fico de Capa 3 y Capa 4 e inyectar un paquete manipulado en la red."}], "id": "CVE-2025-20221", "lastModified": "2025-07-11T14:43:38.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "psirt@cisco.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-05-07T18:15:41.917", "references": [{"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snmp-bypass-HHUVujdn"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "psirt@cisco.com", "type": "Primary"}]}

{}