Cisco Warns of Critical Vulnerability in IOS XR Software Affecting BGP Protocol

Cisco has issued a warning regarding the vulnerability CVE-2025-20115 in its IOS XR software, which affects the Border Gateway Protocol (BGP). This flaw could lead to a network-wide denial of service. Attackers can exploit this vulnerability by sending specially crafted BGP update messages to cause memory corruption. Cisco advises users to update the software immediately or apply temporary mitigation measures.