{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-04T20:12:03.975","vulnerabilities":[{"cve":{"id":"CVE-2025-20146","sourceIdentifier":"psirt@cisco.com","published":"2025-03-12T16:15:22.197","lastModified":"2025-08-01T18:50:42.947","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the Layer 3 multicast feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to the incorrect handling of malformed IPv4 multicast packets that are received on line cards where the interface has either an IPv4 access control list (ACL) or a QoS policy applied. An attacker could exploit this vulnerability by sending crafted IPv4 multicast packets through an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset. Traffic over that line card would be lost while the line card reloads."},{"lang":"es","value":"Una vulnerabilidad en la función de multidifusión de capa 3 del software Cisco IOS XR para los routers de servicios de agregación Cisco ASR serie 9000, los routers compactos de alto rendimiento ASR 9902 y ASR 9903 podría permitir que un atacante remoto no autenticado reinicie una tarjeta de línea, lo que resulta en una denegación de servicio (DoS). Esta vulnerabilidad se debe a la gestión incorrecta de paquetes de multidifusión IPv4 malformados que se reciben en tarjetas de línea cuya interfaz tiene aplicada una lista de control de acceso (ACL) IPv4 o una política de QoS. Un atacante podría explotar esta vulnerabilidad enviando paquetes de multidifusión IPv4 manipulados a través de un dispositivo afectado. Una explotación exitosa podría permitir al atacante provocar excepciones en la tarjeta de línea o un reinicio forzado. El tráfico en esa tarjeta de línea se perdería mientras esta se recarga."}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","baseScore":8.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":4.0}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.9.21:*:*:*:*:*:*:*","matchCriteriaId":"87EF9DC5-4BE2-429D-B9BA-EF9F29E7E0F7"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:*","matchCriteriaId":"E1ED2B72-A65C-47E4-87B3-D83F29428396"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:*:*","matchCriteriaId":"8904CAA5-4E01-462C-AE57-067902CD95FC"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.11.2:*:*:*:*:*:*:*","matchCriteriaId":"7750EA99-EC55-4F94-8730-18583647BBBA"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:7.11.21:*:*:*:*:*:*:*","matchCriteriaId":"FFEA7A0B-E20F-4ECC-A789-A4282EAC3029"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:*:*","matchCriteriaId":"BCE8E968-111F-4F57-93D3-E509AB540B87"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:24.1.2:*:*:*:*:*:*:*","matchCriteriaId":"B342A550-8600-45CF-8B9A-530770C9A0F4"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:24.2.1:*:*:*:*:*:*:*","matchCriteriaId":"D64E1C4D-46B0-4A18-B8EE-BEA732CBF1F8"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:24.2.2:*:*:*:*:*:*:*","matchCriteriaId":"52002032-AB4E-4F3C-B832-EAA83F9EF97D"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:24.3.1:*:*:*:*:*:*:*","matchCriteriaId":"3FD120B9-0671-473C-8420-872E5BB9933F"},{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:24.3.2:*:*:*:*:*:*:*","matchCriteriaId":"7288D433-8CFC-4589-BBCA-466B497251E8"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*","matchCriteriaId":"57EB55BB-41B7-40A1-B6F5-142FE8AB4C16"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*","matchCriteriaId":"433F4A82-04A4-4EAA-8C19-F7581DCD8D29"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*","matchCriteriaId":"2D5E60AB-94FF-448A-89D8-5D2197E21C74"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:*","matchCriteriaId":"91474DBC-FB31-4DDF-96C5-311FA1D53A74"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*","matchCriteriaId":"FA241214-2F05-4360-9B50-385355E29CF4"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*","matchCriteriaId":"A93212A4-50AB-42E7-89A4-5FBBAEA050C3"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*","matchCriteriaId":"EDA53A61-98B3-458C-8893-61CD7D6B1E48"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*","matchCriteriaId":"F396564E-B477-4A27-A189-CEB737552E25"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*","matchCriteriaId":"5445CC54-ACFB-4070-AF26-F91FEAA85181"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*","matchCriteriaId":"D7AA58E5-D7E1-48CF-93FF-C60EB85B2BC7"}]}]}],"references":[{"url":"https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/","source":"psirt@cisco.com","tags":["Not Applicable"]},{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7","source":"psirt@cisco.com","tags":["Vendor Advisory"]}]}}]}