CVE-2026-20173

A vulnerability in Cisco NX-OS Software could allow an unauthenticated, remote attacker to exhaust system resources, causing a denial of service (DoS) condition. This vulnerability exists because rate limiting was improperly applied to some protocols. An attacker could exploit this vulnerability by sending a high rate of UDP or TCP connections to a data plane interface on an affected device. A successful exploit could allow the attacker to cause instability to various routing and control plane protocols through some packet loss and temporary disruptions, causing a DoS condition. This DoS condition will clear without manual intervention soon after the high rate of traffic is stopped.

Score
CVSS 3.1 5.8 Medium
Status
Awaiting Analysis - psirt@cisco.com
Published
2026-10-07
Last modified
2026-10-08
Weaknesses
CWE-770

Affected products

References

 
 
© AVABIS GmbH privacypolicy about