Riskcovery

CVE-2026-76465

Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability

State
Published
Severity
9.8 Critical
Published
Oct 7, 2026
Updated
Oct 8, 2026
Reserved
Aug 19, 2026

Read the record on cve.org

Description

A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper validation when an affected device is processing an MPLS echo-request packet. An attacker could exploit this vulnerability by sending a crafted MPLS echo-request to an IP address on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes, which could result in a device reload and a DoS condition.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hcisco

Weaknesses

  • CWE-590 Free of Memory not on the Heap

Affected Products

ProductVersions
Cisco NX-OS SoftwareCisco
  • 9.3(2)Affected
  • 9.3(1)Affected
  • 9.3(1z)Affected
  • 9.3(3)Affected
  • 9.3(4)Affected
  • 9.3(5)Affected
  • 9.3(6)Affected
  • 9.3(5w)Affected
  • 9.3(7)Affected
  • 9.3(7k)Affected
  • 9.3(7a)Affected
  • 9.3(8)Affected
  • 9.3(9)Affected
  • 9.3(10)Affected
  • 10.3(1)Affected
  • 10.3(2)Affected
  • 9.3(11)Affected
  • 10.3(3)Affected
  • 9.3(12)Affected
  • 10.4(1)Affected
  • 10.3(99w)Affected
  • 10.3(3w)Affected
  • 10.3(99x)Affected
  • 10.3(3o)Affected
  • 10.3(4)Affected
  • and 41 more versions

References

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