CVE-2025-20111

Description

A vulnerability in the health monitoring diagnostics of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of specific Ethernet frames. An attacker could exploit this vulnerability by sending a sustained rate of crafted Ethernet frames to an affected device. A successful exploit could allow the attacker to cause the device to reload.

References

https://securityaffairs.com/174753/security/cisco-fixed-command-injection-and-dos-flaws-in-nexus-switches.html

https://www.securityweek.com/cisco-patches-vulnerabilities-in-nexus-switches/

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-n3kn9k-healthdos-eOqSWK4g

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3