CVE-2020-3566: 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. Required action: Apply updates per vendor instructions.
· high severity · unattributed attribution
Evidence and provenance
- Original source
- CISA KEV report ↗
- Published
- 2021-11-03T00:00:00Z
- Confidence basis
- No actor match
- Record ID
d56d0d00c5c3301ea5c2
Vulnerabilities
CVE-2020-3566
Affected sectors
technology
Use and citation
Verify the original report before making operational decisions. Cite this permanent page together with the original source, publication date, confidence level, and review status.