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CVE PROGRAM SOURCE RECORD5.8 Medium

CVE-2026-20173

Cisco NX-OS Software Denial of Service Vulnerability

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Status
Published
Published
Updated
Assigning organization
cisco

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco NX-OS Software

Default version status: unknown

  • 8.2(5)affected
  • 7.3(5)D1(1)affected
  • 8.4(2)affected
  • 8.4(3)affected
  • 9.2(3)affected
  • 9.2(2v)affected
  • 7.3(4)D1(1)affected
  • 8.2(1)affected
  • 9.2(1)affected
  • 9.2(2t)affected
  • 9.2(3y)affected
  • 9.3(2)affected
  • 8.1(1)affected
  • 8.2(2)affected
  • 8.3(2)affected
  • 7.3(2)D1(3a)affected
  • 9.2(4)affected
  • 8.1(2)affected
  • 7.3(3)D1(1)affected
  • 8.2(3)affected
  • 8.4(1)affected
  • 7.3(0)DX(1)affected
  • 7.3(2)D1(1)affected
  • 9.3(1)affected
  • 7.3(2)D1(2)affected
  • 8.2(4)affected
  • 9.3(1z)affected
  • 9.2(2)affected
  • 8.1(2a)affected
  • 7.3(2)D1(3)affected
  • 8.3(1)affected
  • 7.3(1)D1(1)affected
  • 7.3(0)D1(1)affected
  • 9.3(3)affected
  • 7.3(2)D1(1d)affected
  • 9.3(4)affected
  • 7.3(6)D1(1)affected
  • 8.2(6)affected
  • 9.3(5)affected
  • 9.3(6)affected
  • 8.4(4)affected
  • 7.3(7)D1(1)affected
  • 9.3(5w)affected
  • 8.2(7)affected
  • 9.3(7)affected
  • 9.3(7k)affected
  • 7.3(8)D1(1)affected
  • 9.3(7a)affected
  • 8.2(7a)affected
  • 9.3(8)affected
  • 8.4(4a)affected
  • 8.4(5)affected
  • 8.2(8)affected
  • 9.3(9)affected
  • 7.3(9)D1(1)affected
  • 8.4(6)affected
  • 9.3(10)affected
  • 8.2(9)affected
  • 10.3(1)affected
  • 8.4(7)affected
  • 10.3(2)affected
  • 8.4(6a)affected
  • 9.3(11)affected
  • 10.3(3)affected
  • 8.2(10)affected
  • 9.3(12)affected
  • 10.4(1)affected
  • 8.4(8)affected
  • 10.3(99w)affected
  • 10.3(3w)affected
  • 10.3(99x)affected
  • 10.3(3o)affected
  • 8.4(9)affected
  • 10.3(4)affected
  • 10.3(3p)affected
  • 10.3(4a)affected
  • 10.4(2)affected
  • 10.3(3q)affected
  • 9.3(13)affected
  • 8.2(11)affected
  • 10.3(5)affected
  • 10.4(3)affected
  • 10.3(3x)affected
  • 10.3(4g)affected
  • 10.5(1)affected
  • 8.4(10)affected
  • 10.3(3r)affected
  • 10.3(6)affected
  • 9.3(14)affected
  • 10.4(4)affected
  • 10.3(4h)affected
  • 10.5(2)affected
  • 8.4(11)affected
  • 10.3(7)affected
  • 10.4(5)affected
  • 10.5(3)affected
  • 9.3(15)affected
  • 10.4(4g)affected
  • 10.5(4)affected
  • 8.4(12)affected
  • 10.5(3t)affected
  • 10.3(8)affected
  • 10.4(6)affected
  • 10.5(3s)affected
  • 10.5(3e)affected
  • 10.5(3o)affected
  • 9.3(16)affected
  • 10.5(3p)affected
  • 10.4(7)affected
  • 10.5(5)affected
  • 9.3(17)affected

References