What’s Vulnerable › Vulnerabilities
CVE-2026-76465: Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-07 · updated 2026-10-08
- Weakness: CWE-590
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.
Affected products
- Cisco NX-OS: 9.3(2), 9.3(1), 9.3(1z), 9.3(3), 9.3(4), 9.3(5) (+60)
In the news
- Cisco Advance Notification for Publication of October 7, 2026, Security Advisories
- Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability
References
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