vulnerability
Cisco NX-OS: CVE-2025-20111: Cisco Nexus 3000 and 9000 Series Switches Health Monitoring Diagnostics Denial of Service Vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:A/AC:L/Au:N/C:N/I:N/A:C) | Feb 26, 2025 | Feb 27, 2025 | Mar 25, 2026 |
Severity
6
CVSS
(AV:A/AC:L/Au:N/C:N/I:N/A:C)
Published
Feb 26, 2025
Added
Feb 27, 2025
Modified
Mar 25, 2026
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.
Solution
cisco-nx-update-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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