Resource exhaustion in Cisco Ios Xr Software
CVE-2020-3569
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) p…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.047 (89.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Ios Xr Software — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- 20200829 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities (vendor-advisory, x_refsource_CISCO)
Frequently asked questions
- What is CVE-2020-3569?
- CVE-2020-3569 is a high-severity vulnerability in Cisco Ios Xr Software, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2020-09-23.
- How severe is CVE-2020-3569?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2020-3569 known to be exploited?
- Yes. CVE-2020-3569 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 6 public proof-of-concept repositories are indexed.