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CVE-2025-20141

HIGH CVSS: 7.4 Published: 2025-03-12 Modified: 2026-06-17

Description

A vulnerability in the handling of specific packets that are punted from a line card to a route processor in Cisco IOS XR Software Release 7.9.2 could allow an unauthenticated, adjacent attacker to cause control plane traffic to stop working on multiple Cisco IOS XR platforms.  This vulnerability is due to incorrect handling of packets that are punted to the route processor. An attacker could exploit this vulnerability by sending traffic, which must be handled by the Linux stack on the route processor, to an affected device. A successful exploit could allow the attacker to cause control plane traffic to stop working, resulting in a denial of service (DoS) condition.

Affected Platforms

Cisco Ncs 540X-16Z4G8Q2C-DCisco Ncs 540-6Z18G-Sys-ACisco Ncs 540-28Z4C-Sys-DCisco Ncs 55A2-Mod-Hd-SCisco Ncs 540X-12Z16G-Sys-ACisco Ncs 55A1-48Q6HCisco Ncs 540-28Z4C-Sys-ACisco Ncs 540X-12Z16G-Sys-DCisco Ncs 540X-Acc-SysCisco Ncs 55A1-36H

Weakness Type

CWE-770

References