CVE-2026-76485

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ngoam-rce-LWKQ4BU

Configurations

No configuration.

History

07 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-07 17:17

Updated : 2026-10-08 20:08

NVD link : CVE-2026-76485

Mitre link : CVE-2026-76485

CVE.ORG link : CVE-2026-76485

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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{"status": "affected", "version": "9.2(2v)"}, {"status": "affected", "version": "9.2(1)"}, {"status": "affected", "version": "9.2(2t)"}, {"status": "affected", "version": "9.2(3y)"}, {"status": "affected", "version": "9.3(2)"}, {"status": "affected", "version": "9.2(4)"}, {"status": "affected", "version": "9.3(1)"}, {"status": "affected", "version": "9.3(1z)"}, {"status": "affected", "version": "9.2(2)"}, {"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"}]}], "published": "2026-10-07T17:17:01.183", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ngoam-rce-LWKQ4BU", "source": "psirt@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "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.\r\n\r\nThis 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."}], "lastModified": "2026-10-08T20:08:45.857", "sourceIdentifier": "psirt@cisco.com"}