Vulnerability in Cisco Nx-Os Software
CVE-2025-20111
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Cisco Nx-Os Software — versions 9.3(2), 9.3(1), 9.3(1z)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-20111?
- CVE-2025-20111 is a high-severity vulnerability in Cisco Nx-Os Software, classified under CWE-1220. CVSS score: 7.4/10. Published 2025-02-26.
- How severe is CVE-2025-20111?
- High severity. CVSS v3 base score is 7.4 out of 10.