Known Exploited Vulnerabilities November 03, 2021 · CISA KEV Catalog

CVE-2020-3569: Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

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.

Read the original at CISA KEV Catalog ↗

Topics

Vulnerabilities & Patching

Mentions

CVE-2020-3569Cisco

Related

CVE-2026-20320: Cisco Broad Works Improper Restriction of XML External Entity Reference Vulnerability Known Exploited Vulnerabilities · Nov 10, 2026

CVE-2026-76418: Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability Known Exploited Vulnerabilities · Oct 29, 2026

CVE-2026-76519: Cisco Secure Email Gateway Relative Path Traversal Vulnerability Known Exploited Vulnerabilities · Oct 14, 2026