CVE-2020-3569
악용 확인 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability
악용 여부
악용 확인
심각도 (발행처 발표값)
높음8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
악용 확률 (EPSS)
3.3%
한국어 공식 권고
CISA 원문
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 KEV · shortDescription 원문
Apply updates per vendor instructions.— CISA KEV · requiredAction 원문
취약점 설명 (NVD 원문)
Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.
CWE-400 CWE-770
악용 확률 변화
| 기준일 | 확률 | 백분위 |
|---|---|---|
| 2026-09-06 | 3.32% | 87.8% |
| 2026-09-05 | 3.32% | 87.8% |
| 2026-09-04 | 3.32% | 87.8% |