{"schema_version":"1","data":[{"id":3529,"advisory_id":"b33ac4ec-8561-400d-8eee-1a91b5f0b6d8","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-3566","source_published_at":"2021-11-03T00:00:00+00:00","published_at":"2026-10-24T21:36:30.088917+00:00","extraction_method":"structured","technologies":["core-kev","ios-xr"],"cve_ids":["CVE-2020-3566"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability","summary":"Cisco IOS XR Distance Vector Multicast Routing Protocol (DVMRP) incorrectly handles Internet Group Management Protocol (IGMP) packets. Exploitation could allow an unauthenticated, remote attacker to immediately crash the IGMP process or make it consume available memory and eventually crash. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2020-3566","products":[{"name":{"value":"IOS XR","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2020-3566","aliases":["CVE-2020-3566"],"affected":[],"modified":"2021-11-03T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-400"],"cveID":"CVE-2020-3566","notes":"https://nvd.nist.gov/vuln/detail/CVE-2020-3566","dueDate":"2022-05-03","product":"IOS XR","dateAdded":"2021-11-03","vendorProject":"Cisco","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"Cisco IOS XR Distance Vector Multicast Routing Protocol (DVMRP) incorrectly handles Internet Group Management Protocol (IGMP) packets. Exploitation could allow an unauthenticated, remote attacker to immediately crash the IGMP process or make it consume available memory and eventually crash.","vulnerabilityName":"Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2020-3566","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null}}],"next_after":3529,"next_before":3529}