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.

Metrics

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Cisco
  • Ios Xr
  • Ios Xr Software
  • Ncs 540-12z20g-sys-a
  • Ncs 540-12z20g-sys-d
  • Ncs 540-24q2c2dd-sys
  • Ncs 540-24q8l2dd-sys
  • Ncs 540-24z8q2c-sys
  • Ncs 540-28z4c-sys-a
  • Ncs 540-28z4c-sys-d
  • Ncs 540-6z14s-sys-d
  • Ncs 540-6z18g-sys-a
  • Ncs 540-6z18g-sys-d
  • Ncs 540-acc-sys
  • Ncs 540-fh-agg
  • Ncs 540-fh-csr-sys
  • Ncs 540x-12z16g-sys-a
  • Ncs 540x-12z16g-sys-d
  • Ncs 540x-16z4g8q2c-a
  • Ncs 540x-16z4g8q2c-d
  • Ncs 540x-16z8q2c-d
  • Ncs 540x-4z14g2q-a
  • Ncs 540x-4z14g2q-d
  • Ncs 540x-6z18g-sys-a
  • Ncs 540x-6z18g-sys-d
  • Ncs 540x-8z16g-sys-a
  • Ncs 540x-8z16g-sys-d
  • Ncs 540x-acc-sys
  • Ncs 5501
  • Ncs 5501-se
  • Ncs 5502
  • Ncs 5502-se
  • Ncs 5504
  • Ncs 5508
  • Ncs 5516
  • Ncs 55a1-24h
  • Ncs 55a1-24q6h-s
  • Ncs 55a1-24q6h-ss
  • Ncs 55a1-36h
  • Ncs 55a1-36h-se
  • Ncs 55a1-48q6h
  • Ncs 55a2-mod-hd-s
  • Ncs 55a2-mod-s
  • Ncs 55a2-mod-se-s
  • Ncs 57b1-5dse-sys
  • Ncs 57b1-6d24-sys
  • Ncs 57c1-48q6-sys
  • Ncs 57c3-mod-sys
  • Ncs 57d2-18dd-sys

Configuration 1 [-]

AND
cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:*:*
OR cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24q2c2dd-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24q8l2dd-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-6z14s-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-6z18g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-6z18g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-fh-agg:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-fh-csr-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z8q2c-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-4z14g2q-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-4z14g2q-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-6z18g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-6z18g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-8z16g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-8z16g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-acc-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5504:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-24h:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-24q6h-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-24q6h-ss:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-36h:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-36h-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-48q6h:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a2-mod-hd-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a2-mod-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a2-mod-se-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57b1-5dse-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57b1-6d24-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57c1-48q6-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57c3-mod-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57d2-18dd-sys:-:*:*:*:*:*:*:*

No data.

References
Link Providers
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-xr792-bWfVDPY cve-icon cve-icon
History

Wed, 06 Aug 2025 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Cisco ios Xr
Cisco ncs 540-12z20g-sys-a
Cisco ncs 540-12z20g-sys-d
Cisco ncs 540-24q2c2dd-sys
Cisco ncs 540-24q8l2dd-sys
Cisco ncs 540-24z8q2c-sys
Cisco ncs 540-28z4c-sys-a
Cisco ncs 540-28z4c-sys-d
Cisco ncs 540-6z14s-sys-d
Cisco ncs 540-6z18g-sys-a
Cisco ncs 540-6z18g-sys-d
Cisco ncs 540-acc-sys
Cisco ncs 540-fh-agg
Cisco ncs 540-fh-csr-sys
Cisco ncs 540x-12z16g-sys-a
Cisco ncs 540x-12z16g-sys-d
Cisco ncs 540x-16z4g8q2c-a
Cisco ncs 540x-16z4g8q2c-d
Cisco ncs 540x-16z8q2c-d
Cisco ncs 540x-4z14g2q-a
Cisco ncs 540x-4z14g2q-d
Cisco ncs 540x-6z18g-sys-a
Cisco ncs 540x-6z18g-sys-d
Cisco ncs 540x-8z16g-sys-a
Cisco ncs 540x-8z16g-sys-d
Cisco ncs 540x-acc-sys
Cisco ncs 5501
Cisco ncs 5501-se
Cisco ncs 5502
Cisco ncs 5502-se
Cisco ncs 5504
Cisco ncs 5508
Cisco ncs 5516
Cisco ncs 55a1-24h
Cisco ncs 55a1-24q6h-s
Cisco ncs 55a1-24q6h-ss
Cisco ncs 55a1-36h
Cisco ncs 55a1-36h-se
Cisco ncs 55a1-48q6h
Cisco ncs 55a2-mod-hd-s
Cisco ncs 55a2-mod-s
Cisco ncs 55a2-mod-se-s
Cisco ncs 57b1-5dse-sys
Cisco ncs 57b1-6d24-sys
Cisco ncs 57c1-48q6-sys
Cisco ncs 57c3-mod-sys
Cisco ncs 57d2-18dd-sys
CPEs cpe:2.3:h:cisco:ncs_540-12z20g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-12z20g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24q2c2dd-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24q8l2dd-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-24z8q2c-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-28z4c-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-28z4c-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-6z14s-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-6z18g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-6z18g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-acc-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-fh-agg:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540-fh-csr-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-12z16g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-12z16g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z4g8q2c-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-16z8q2c-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-4z14g2q-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-4z14g2q-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-6z18g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-6z18g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-8z16g-sys-a:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-8z16g-sys-d:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540x-acc-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5504:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-24h:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-24q6h-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-24q6h-ss:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-36h-se:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-36h:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a1-48q6h:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a2-mod-hd-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a2-mod-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_55a2-mod-se-s:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57b1-5dse-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57b1-6d24-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57c1-48q6-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57c3-mod-sys:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_57d2-18dd-sys:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:*:*
Vendors & Products Cisco ios Xr
Cisco ncs 540-12z20g-sys-a
Cisco ncs 540-12z20g-sys-d
Cisco ncs 540-24q2c2dd-sys
Cisco ncs 540-24q8l2dd-sys
Cisco ncs 540-24z8q2c-sys
Cisco ncs 540-28z4c-sys-a
Cisco ncs 540-28z4c-sys-d
Cisco ncs 540-6z14s-sys-d
Cisco ncs 540-6z18g-sys-a
Cisco ncs 540-6z18g-sys-d
Cisco ncs 540-acc-sys
Cisco ncs 540-fh-agg
Cisco ncs 540-fh-csr-sys
Cisco ncs 540x-12z16g-sys-a
Cisco ncs 540x-12z16g-sys-d
Cisco ncs 540x-16z4g8q2c-a
Cisco ncs 540x-16z4g8q2c-d
Cisco ncs 540x-16z8q2c-d
Cisco ncs 540x-4z14g2q-a
Cisco ncs 540x-4z14g2q-d
Cisco ncs 540x-6z18g-sys-a
Cisco ncs 540x-6z18g-sys-d
Cisco ncs 540x-8z16g-sys-a
Cisco ncs 540x-8z16g-sys-d
Cisco ncs 540x-acc-sys
Cisco ncs 5501
Cisco ncs 5501-se
Cisco ncs 5502
Cisco ncs 5502-se
Cisco ncs 5504
Cisco ncs 5508
Cisco ncs 5516
Cisco ncs 55a1-24h
Cisco ncs 55a1-24q6h-s
Cisco ncs 55a1-24q6h-ss
Cisco ncs 55a1-36h
Cisco ncs 55a1-36h-se
Cisco ncs 55a1-48q6h
Cisco ncs 55a2-mod-hd-s
Cisco ncs 55a2-mod-s
Cisco ncs 55a2-mod-se-s
Cisco ncs 57b1-5dse-sys
Cisco ncs 57b1-6d24-sys
Cisco ncs 57c1-48q6-sys
Cisco ncs 57c3-mod-sys
Cisco ncs 57d2-18dd-sys

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00052}

 epss

{'score': 0.00059}

Fri, 21 Mar 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 12 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
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.
Title Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerabillity
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2025-03-21T20:35:20.642Z

Reserved: 2024-10-10T19:15:13.214Z

Link: CVE-2025-20141

cve-icon Vulnrichment

Updated: 2025-03-21T20:35:14.973Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-12T16:15:21.420

Modified: 2025-08-06T17:05:07.530

Link: CVE-2025-20141

cve-icon Redhat

No data.