Description

A vulnerability in the Layer 3 multicast feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed IPv4 multicast packets that are received on line cards where the interface has either an IPv4 access control list (ACL) or a QoS policy applied. An attacker could exploit this vulnerability by sending crafted IPv4 multicast packets through an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset. Traffic over that line card would be lost while the line card reloads.

INFO

Published Date :

2025-03-12T16:12:56.245Z

Last Modified :

2025-03-21T20:27:39.497Z

Source :

cisco
AFFECTED PRODUCTS

The following products are affected by CVE-2025-20146 vulnerability.

Vendors Products
Cisco
  • Asr 9006
  • Asr 9010
  • Asr 9901
  • Asr 9902
  • Asr 9903
  • Asr 9904
  • Asr 9906
  • Asr 9910
  • Asr 9912
  • Asr 9922
  • Ios Xr
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-20146.

URL Resource
https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ cve-icon cve-icon
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7 cve-icon cve-icon
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CVSS Vulnerability Scoring System

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