Answer in brief
CVE-2026-76465 records a Critical severity (CVSS 9.8) vulnerability in Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability. The current sources do not mark it as known exploited. The current feed maps Cisco/Cisco NX-OS Software (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco NX-OS Software (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco NX-OS Softwaregeneric | 9.3(2) || 9.3(1) || 9.3(1z) || 9.3(3) || 9.3(4) || 9.3(5) || 9.3(6) || 9.3(5w) || 9.3(7) || 9.3(7k) || 9.3(7a) || 9.3(8) || 9.3(9) || 9.3(10) || 10.3(1) || 10.3(2) || 9.3(11) || 10.3(3) || 9.3(12) || 10.4(1) || 10.3(99w) || 10.3(3w) || 10.3(99x) || 10.3(3o) || 10.3(4) || 10.3(3p) || 10.3(4a) || 10.4(2) || 10.3(3q) || 9.3(13) || 10.3(5) || 10.4(3) || 10.3(3x) || 10.3(4g) || 10.5(1) || 10.3(3r) || 10.3(6) || 9.3(14) || 10.4(4) || 10.3(4h) || 10.5(2) || 10.3(7) || 10.4(5) || 10.5(3) || 9.3(15) || 10.4(4g) || 10.5(4) || 10.6(1) || 10.5(3t) || 10.3(8) || 10.4(6) || 10.5(3s) || 10.5(3e) || 10.5(3o) || 9.3(16) || 10.6(1s) || 10.6(2) || 10.5(3p) || 10.3(9) || 10.6(2s) || 10.6(3) || 10.4(7) || 10.5(5) || 9.3(17) || 10.6(2n) || 10.6(3s) | Not reported |
Published upstream
Oct 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 7, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.