Cisco Nexus 3000 and 9000 Series Switches VXLAN OAM (NGOAM) Remote Code Execution Vulnerability
A vulnerability in the VXLAN Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software, known as NGOAM, could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a Denial-of-Service (DoS) on an affected device. This vulnerability is due to improper input validation of IP traffic when the NGOAM feature is enabled. An attacker could exploit this vulnerability by sending crafted packets to an IP interface on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes resulting in a reload and DoS condition.
CVE-2026-76486
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-76486
Cisco NX-OS Software
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Cisco",
"product": "Cisco NX-OS Software",
"versions": [
{
"status": "affected",
"version": "9.3(3)"
},
{
"status": "affected",
"version": "9.3(4)"
},
{
"status": "affected",
"version": "9.3(5)"
},
{
"status": "affected",
"version": "9.3(6)"
},
{
"status": "affected",
"version": "9.3(5w)"
},
{
"status": "affected",
"version": "9.3(7)"
},
{
"status": "affected",
"version": "9.3(7k)"
},
{
"status": "affected",
"version": "9.3(7a)"
},
{
"status": "affected",
"version": "9.3(8)"
},
{
"status": "affected",
"version": "9.3(9)"
},
{
"status": "affected",
"version": "9.3(10)"
},
{
"status": "affected",
"version": "10.3(1)"
},
{
"status": "affected",
"version": "10.3(2)"
},
{
"status": "affected",
"version": "9.3(11)"
},
{
"status": "affected",
"version": "10.3(3)"
},
{
"status": "affected",
"version": "9.3(12)"
},
{
"status": "affected",
"version": "10.4(1)"
},
{
"status": "affected",
"version": "10.3(99w)"
},
{
"status": "affected",
"version": "10.3(3w)"
},
{
"status": "affected",
"version": "10.3(99x)"
},
{
"status": "affected",
"version": "10.3(3o)"
},
{
"status": "affected",
"version": "10.3(4)"
},
{
"status": "affected",
"version": "10.3(3p)"
},
{
"status": "affected",
"version": "10.3(4a)"
},
{
"status": "affected",
"version": "10.4(2)"
},
{
"status": "affected",
"version": "10.3(3q)"
},
{
"status": "affected",
"version": "9.3(13)"
},
{
"status": "affected",
"version": "10.3(5)"
},
{
"status": "affected",
"version": "10.4(3)"
},
{
"status": "affected",
"version": "10.3(3x)"
},
{
"status": "affected",
"version": "10.3(4g)"
},
{
"status": "affected",
"version": "10.5(1)"
},
{
"status": "affected",
"version": "10.3(3r)"
},
{
"status": "affected",
"version": "10.3(6)"
},
{
"status": "affected",
"version": "9.3(14)"
},
{
"status": "affected",
"version": "10.4(4)"
},
{
"status": "affected",
"version": "10.3(4h)"
},
{
"status": "affected",
"version": "10.5(2)"
},
{
"status": "affected",
"version": "10.3(7)"
},
{
"status": "affected",
"version": "10.4(5)"
},
{
"status": "affected",
"version": "10.5(3)"
},
{
"status": "affected",
"version": "9.3(15)"
},
{
"status": "affected",
"version": "10.4(4g)"
},
{
"status": "affected",
"version": "10.5(4)"
},
{
"status": "affected",
"version": "10.6(1)"
},
{
"status": "affected",
"version": "10.5(3t)"
},
{
"status": "affected",
"version": "10.3(8)"
},
{
"status": "affected",
"version": "10.4(6)"
},
{
"status": "affected",
"version": "10.5(3s)"
},
{
"status": "affected",
"version": "10.5(3e)"
},
{
"status": "affected",
"version": "10.5(3o)"
},
{
"status": "affected",
"version": "9.3(16)"
},
{
"status": "affected",
"version": "10.6(1s)"
},
{
"status": "affected",
"version": "10.6(2)"
},
{
"status": "affected",
"version": "10.5(3p)"
},
{
"status": "affected",
"version": "10.3(9)"
},
{
"status": "affected",
"version": "10.6(2s)"
},
{
"status": "affected",
"version": "10.6(3)"
},
{
"status": "affected",
"version": "10.4(7)"
},
{
"status": "affected",
"version": "10.5(5)"
},
{
"status": "affected",
"version": "9.3(17)"
},
{
"status": "affected",
"version": "10.6(2n)"
},
{
"status": "affected",
"version": "10.6(3s)"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-76486
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #12375 · Revision 1
- Added to Heist Feed
- Publisher date