CVE-2025-20146

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-20146", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2024-10-10T19:15:13.215Z", "datePublished": "2025-03-12T16:12:56.245Z", "dateUpdated": "2025-03-21T20:27:39.497Z"}, "containers": {"cna": {"title": "Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Routing Denial of Service Vulnerability", "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"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"}}], "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."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7", "name": "cisco-sa-multicast-ERMrSvq7"}, {"url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/", "name": "Crafting endless AS-PATHS in BGP"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "source": {"advisory": "cisco-sa-multicast-ERMrSvq7", "discovery": "EXTERNAL", "defects": ["CSCwm45759"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Input Validation", "type": "cwe", "cweId": "CWE-20"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco IOS XR Software", "versions": [{"version": "7.11.1", "status": "affected"}, {"version": "7.9.21", "status": "affected"}, {"version": "7.10.2", "status": "affected"}, {"version": "24.1.1", "status": "affected"}, {"version": "7.11.2", "status": "affected"}, {"version": "24.2.1", "status": "affected"}, {"version": "24.1.2", "status": "affected"}, {"version": "24.3.1", "status": "affected"}, {"version": "24.2.2", "status": "affected"}, {"version": "7.11.21", "status": "affected"}, {"version": "24.3.2", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2025-03-12T16:12:56.245Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-03-21T20:27:17.763797Z", "id": "CVE-2025-20146", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-21T20:27:39.497Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-20146", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-03-21T20:27:17.763797Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-21T20:27:29.549Z"}}], "cna": {"title": "Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Routing Denial of Service Vulnerability", "source": {"defects": ["CSCwm45759"], "advisory": "cisco-sa-multicast-ERMrSvq7", "discovery": "EXTERNAL"}, "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "Cisco", "product": "Cisco IOS XR Software", "versions": [{"status": "affected", "version": "7.11.1"}, {"status": "affected", "version": "7.9.21"}, {"status": "affected", "version": "7.10.2"}, {"status": "affected", "version": "24.1.1"}, {"status": "affected", "version": "7.11.2"}, {"status": "affected", "version": "24.2.1"}, {"status": "affected", "version": "24.1.2"}, {"status": "affected", "version": "24.3.1"}, {"status": "affected", "version": "24.2.2"}, {"status": "affected", "version": "7.11.21"}, {"status": "affected", "version": "24.3.2"}], "defaultStatus": "unknown"}], "exploits": [{"lang": "en", "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7", "name": "cisco-sa-multicast-ERMrSvq7"}, {"url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/", "name": "Crafting endless AS-PATHS in BGP"}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "cwe", "cweId": "CWE-20", "description": "Improper Input Validation"}]}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2025-03-12T16:12:56.245Z"}}}, "cveMetadata": {"cveId": "CVE-2025-20146", "state": "PUBLISHED", "dateUpdated": "2025-03-21T20:27:39.497Z", "dateReserved": "2024-10-10T19:15:13.215Z", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "datePublished": "2025-03-12T16:12:56.245Z", "assignerShortName": "cisco"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Cisco IOS XR Software", "vendor": "Cisco", "versions": [{"status": "affected", "version": "7.11.1"}, {"status": "affected", "version": "7.9.21"}, {"status": "affected", "version": "7.10.2"}, {"status": "affected", "version": "24.1.1"}, {"status": "affected", "version": "7.11.2"}, {"status": "affected", "version": "24.2.1"}, {"status": "affected", "version": "24.1.2"}, {"status": "affected", "version": "24.3.1"}, {"status": "affected", "version": "24.2.2"}, {"status": "affected", "version": "7.11.21"}, {"status": "affected", "version": "24.3.2"}]}], "source": "psirt@cisco.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"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", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"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", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "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 funci\u00f3n de multidifusi\u00f3n de capa 3 del software Cisco IOS XR para los routers de servicios de agregaci\u00f3n Cisco ASR serie 9000, los routers compactos de alto rendimiento ASR 9902 y ASR 9903 podr\u00eda permitir que un atacante remoto no autenticado reinicie una tarjeta de l\u00ednea, lo que resulta en una denegaci\u00f3n de servicio (DoS). Esta vulnerabilidad se debe a la gesti\u00f3n incorrecta de paquetes de multidifusi\u00f3n IPv4 malformados que se reciben en tarjetas de l\u00ednea cuya interfaz tiene aplicada una lista de control de acceso (ACL) IPv4 o una pol\u00edtica de QoS. Un atacante podr\u00eda explotar esta vulnerabilidad enviando paquetes de multidifusi\u00f3n IPv4 manipulados a trav\u00e9s de un dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante provocar excepciones en la tarjeta de l\u00ednea o un reinicio forzado. El tr\u00e1fico en esa tarjeta de l\u00ednea se perder\u00eda mientras esta se recarga."}], "id": "CVE-2025-20146", "lastModified": "2026-06-17T08:40:46.787", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-20146", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-21T20:27:17.763797Z", "version": "2.0.3"}}]}, "published": "2025-03-12T16:15:22.197", "references": [{"source": "psirt@cisco.com", "tags": ["Not Applicable"], "url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/"}, {"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "psirt@cisco.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}