CVE-2025-20262 — Cisco Nexus 3000 and 9000 Series Switches Protocol Independent Multicast Version 6 Denial of Service Vulnerability

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Cisco / Cisco NX-OS Software	affected 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 10.1(2t); affected 10.2(3); affected 10.2(3t); affected 9.3(10); affected 10.2(2a); affected 10.3(1); affected 10.2(4); affected 10.3(2); affected 9.3(11); affected 10.3(3); affected 10.2(5); affected 9.3(12); affected 10.2(3v); affected 10.4(1); affected 10.3(99w); affected 10.2(6); affected 10.3(3w); affected 10.3(99x); affected 10.3(3o); affected 10.3(4); affected 10.3(3p); affected 10.3(4a); affected 10.4(2); affected 10.3(3q); affected 9.3(13); affected 10.3(5); affected 10.2(7); affected 10.4(3); affected 10.3(3x); affected 10.3(4g); affected 10.5(1); affected 10.2(8); affected 10.3(3r); affected 10.3(6); affected 9.3(14); affected 10.4(4); affected 10.3(4h); affected 10.5(2); affected 10.4(4g)

Vendor / product

Versions

Cisco / Cisco NX-OS Software

affected 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 10.1(2t); affected 10.2(3); affected 10.2(3t); affected 9.3(10); affected 10.2(2a); affected 10.3(1); affected 10.2(4); affected 10.3(2); affected 9.3(11); affected 10.3(3); affected 10.2(5); affected 9.3(12); affected 10.2(3v); affected 10.4(1); affected 10.3(99w); affected 10.2(6); affected 10.3(3w); affected 10.3(99x); affected 10.3(3o); affected 10.3(4); affected 10.3(3p); affected 10.3(4a); affected 10.4(2); affected 10.3(3q); affected 9.3(13); affected 10.3(5); affected 10.2(7); affected 10.4(3); affected 10.3(3x); affected 10.3(4g); affected 10.5(1); affected 10.2(8); affected 10.3(3r); affected 10.3(6); affected 9.3(14); affected 10.4(4); affected 10.3(4h); affected 10.5(2); affected 10.4(4g)

CWE

CWE-476

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxospc-pim6-vG4jFPh

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.