A AegiFlow
UNKNOWNKNOWN EXPLOITED

CVE-2020-3569

Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

Published
2021-11-03
Modified
2026-07-31
Sources
cisa-kev

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.

References

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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