Riskcovery

CVE-2025-20262

Cisco Nexus 3000 and 9000 Series Switches Protocol Independent Multicast Version 6 Denial of Service Vulnerability

State
Published
Severity
5.0 Medium
Published
Aug 27, 2025
Updated
Aug 27, 2025
Reserved
Oct 10, 2024

Read the record on cve.org

Description

A vulnerability in the Protocol Independent Multicast Version 6 (PIM6) feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, low-privileged, remote attacker to trigger a crash of the PIM6 process, resulting in a denial of service (DoS) condition.

This vulnerability is due to improper processing of PIM6 ephemeral data queries. An attacker could exploit this vulnerability by sending a crafted ephemeral query to an affected device through one of the following methods: NX-API REST, NETCONF, RESTConf, gRPC, or Model Driven Telemetry. A successful exploit could allow the attacker to cause the PIM6 process to crash and restart, causing potential adjacency flaps and resulting in a DoS of the PIM6 and ephemeral query processes.

Scores

CVSSScoreVectorSource
3.15.0 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lcisco

Weaknesses

Affected Products

ProductVersions
Cisco NX-OS SoftwareCisco
  • 9.2(3)Affected
  • 9.2(2v)Affected
  • 9.2(1)Affected
  • 9.2(2t)Affected
  • 9.2(3y)Affected
  • 9.3(2)Affected
  • 9.2(4)Affected
  • 9.3(1)Affected
  • 9.3(1z)Affected
  • 9.2(2)Affected
  • 9.3(3)Affected
  • 9.3(4)Affected
  • 9.3(5)Affected
  • 9.3(6)Affected
  • 10.1(2)Affected
  • 10.1(1)Affected
  • 9.3(5w)Affected
  • 9.3(7)Affected
  • 9.3(7k)Affected
  • 10.2(1)Affected
  • 9.3(7a)Affected
  • 9.3(8)Affected
  • 10.2(1q)Affected
  • 10.2(2)Affected
  • 9.3(9)Affected
  • and 39 more versions

References

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