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CVE PROGRAM SOURCE RECORD7.4 High

CVE-2025-20340

Cisco IOS XR Address Resolution Protocol Broadcast Storm Vulnerability

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Status
Published
Published
Updated
Assigning organization
cisco

Description

A vulnerability in the Address Resolution Protocol (ARP) implementation of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to trigger a broadcast storm, leading to a denial of service (DoS) condition on an affected device.  This vulnerability is due to how Cisco IOS XR Software processes a high, sustained rate of ARP traffic hitting the management interface. Under certain conditions, an attacker could exploit this vulnerability by sending an excessive amount of traffic to the management interface of an affected device, overwhelming its ARP processing capabilities. A successful exploit could result in degraded device performance, loss of management connectivity, and complete unresponsiveness of the system, leading to a DoS condition.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco IOS XR Software

Default version status: unknown

  • 6.5.3affected
  • 6.5.29affected
  • 6.5.1affected
  • 6.6.1affected
  • 6.5.2affected
  • 6.5.92affected
  • 6.5.15affected
  • 6.6.2affected
  • 7.0.1affected
  • 6.6.25affected
  • 6.5.26affected
  • 6.6.11affected
  • 6.5.25affected
  • 6.5.28affected
  • 6.5.93affected
  • 6.6.12affected
  • 6.5.90affected
  • 7.0.0affected
  • 7.1.1affected
  • 7.0.90affected
  • 6.6.3affected
  • 6.7.1affected
  • 7.0.2affected
  • 7.1.15affected
  • 7.2.0affected
  • 7.2.1affected
  • 7.1.2affected
  • 6.7.2affected
  • 7.0.11affected
  • 7.0.12affected
  • 7.0.14affected
  • 7.1.25affected
  • 6.6.4affected
  • 7.2.12affected
  • 7.3.1affected
  • 7.1.3affected
  • 6.7.3affected
  • 7.4.1affected
  • 7.2.2affected
  • 6.7.4affected
  • 6.5.31affected
  • 7.3.15affected
  • 7.3.16affected
  • 6.8.1affected
  • 7.4.15affected
  • 6.5.32affected
  • 7.3.2affected
  • 7.5.1affected
  • 7.4.16affected
  • 7.3.27affected
  • 7.6.1affected
  • 7.5.2affected
  • 7.8.1affected
  • 7.6.15affected
  • 7.5.12affected
  • 7.8.12affected
  • 7.3.3affected
  • 7.7.1affected
  • 6.8.2affected
  • 7.3.4affected
  • 7.4.2affected
  • 6.7.35affected
  • 6.9.1affected
  • 7.6.2affected
  • 7.5.3affected
  • 7.7.2affected
  • 6.9.2affected
  • 7.9.1affected
  • 7.10.1affected
  • 7.8.2affected
  • 7.5.4affected
  • 6.5.33affected
  • 7.8.22affected
  • 7.7.21affected
  • 7.9.2affected
  • 7.3.5affected
  • 7.5.5affected
  • 7.11.1affected
  • 7.9.21affected
  • 7.10.2affected
  • 24.1.1affected
  • 7.6.3affected
  • 7.3.6affected
  • 7.5.52affected
  • 7.11.2affected
  • 24.2.1affected
  • 24.1.2affected
  • 24.2.11affected
  • 24.3.1affected
  • 24.4.1affected
  • 24.2.2affected
  • 7.8.23affected
  • 7.11.21affected
  • 24.2.20affected
  • 24.3.2affected
  • 24.4.10affected
  • 6.5.35affected
  • 25.1.1affected
  • 24.4.2affected
  • 24.3.20affected
  • 24.4.15affected
  • 6.5.351affected
  • 24.3.30affected
  • 6.5.352affected
  • 24.4.30affected

References