Remote Code Execution Vulnerability in Cisco Nexus 3000 and 9000 Series Switches
CVE-2026-76465

9.8CRITICAL

Key Information:

Vendor

Cisco
Status
Cisco Nx-os Software
Vendor
CVE Published:
7 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-76465?

A vulnerability exists in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software for Cisco Nexus 3000 and 9000 Series Switches. This flaw arises from inadequate validation during the processing of MPLS echo-request packets, enabling an unauthenticated remote attacker to potentially execute arbitrary code with root privileges. Additionally, exploiting this vulnerability may lead to Denial of Service (DoS) conditions through process crashes and device reloads.

Affected Version(s)

Cisco NX-OS Software 9.3(2)

Cisco NX-OS Software 9.3(1)

Cisco NX-OS Software 9.3(1z)

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.