CVE-2025-20262
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.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Cisco NX-OS Software | 9.2(3), 9.2(2v), 9.2(1), 9.2(2t), 9.2(3y), 9.3(2), 9.2(4), 9.3(1), 9.3(1z), 9.2(2), 9.3(3), 9.3(4), 9.3(5), 9.3(6), 10.1(2), 10.1(1), 9.3(5w), 9.3(7), 9.3(7k), 10.2(1), 9.3(7a), 9.3(8), 10.2(1q), 10.2(2), 9.3(9), 10.1(2t), 10.2(3), 10.2(3t), 9.3(10), 10.2(2a), 10.3(1), 10.2(4), 10.3(2), 9.3(11), 10.3(3), 10.2(5), 9.3(12), 10.2(3v), 10.4(1), 10.3(99w), 10.2(6), 10.3(3w), 10.3(99x), 10.3(3o), 10.3(4), 10.3(3p), 10.3(4a), 10.4(2), 10.3(3q), 9.3(13), 10.3(5), 10.2(7), 10.4(3), 10.3(3x), 10.3(4g), 10.5(1), 10.2(8), 10.3(3r), 10.3(6), 9.3(14), 10.4(4), 10.3(4h), 10.5(2), 10.4(4g) | — |
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