CVE-2020-3566
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
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EPSS — probability of exploitation (30 days)
3.7%
89.2th percentile
CISA KEV
Listed
Added 2021-11-03 · patch by 2022-05-03
Weakness / dates
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Published — · modified —
Timeline
- 2021-11-03 — Added to CISA KEV (actively exploited)
- 2022-05-03 — CISA patch-by deadline
Description
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.