cvedb.io
CVE-2025-20115
HIGH · CVSS 8.6
EPSS exploitation probability: 0%
Published 2025-03-12T16:15:21.090 · Last modified 2026-06-17T08:40:42.077

Summary

A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to a memory corruption that occurs when a BGP update is created with an AS_CONFED_SEQUENCE attribute that has 255 autonomous system numbers (AS numbers). An attacker could exploit this vulnerability by sending a crafted BGP update message, or the network could be designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more. A successful exploit could allow the attacker to cause memory corruption, which may cause the BGP process to restart, resulting in a DoS condition. To exploit this vulnerability, an attacker must cont

Affected products

cisco — ios_xr

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.