Vulnerability-Lookup

GHSA-74H7-6GF3-J457

Vulnerability from github – Published: 2026-10-07 18:32 – Updated: 2026-10-07 18:32

Details

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.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-76465"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-590"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-07T17:16:59Z",
    "severity": "CRITICAL"
  },
  "details": "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\u0026nbsp;root privileges or cause a denial of service (DoS) condition on an affected device.\n\nThis 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\u0026nbsp;root privileges and could cause process crashes, which could result in a device reload and a DoS condition.",
  "id": "GHSA-74h7-6gf3-j457",
  "modified": "2026-10-07T18:32:11Z",
  "published": "2026-10-07T18:32:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76465"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-moam-rce-uBTzYV7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-76465 (GCVE-0-2026-76465)

Vulnerability from cvelistv5 – Published: 2026-10-07 16:14 – Updated: 2026-10-08 03:55

Title

Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability

Summary

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.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-07 00:00 UTC

CWE

CWE-590 - Free of Memory not on the Heap

Assigner

cisco mitre root Scorecard

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco NX-OS Software	Affected: 9.3(2) Affected: 9.3(1) Affected: 9.3(1z) Affected: 9.3(3) Affected: 9.3(4) Affected: 9.3(5) Affected: 9.3(6) Affected: 9.3(5w) Affected: 9.3(7) Affected: 9.3(7k) Affected: 9.3(7a) Affected: 9.3(8) Affected: 9.3(9) Affected: 9.3(10) Affected: 10.3(1) Affected: 10.3(2) Affected: 9.3(11) Affected: 10.3(3) Affected: 9.3(12) Affected: 10.4(1) Affected: 10.3(99w) Affected: 10.3(3w) Affected: 10.3(99x) Affected: 10.3(3o) Affected: 10.3(4) Affected: 10.3(3p) Affected: 10.3(4a) Affected: 10.4(2) Affected: 10.3(3q) Affected: 9.3(13) Affected: 10.3(5) Affected: 10.4(3) Affected: 10.3(3x) Affected: 10.3(4g) Affected: 10.5(1) Affected: 10.3(3r) Affected: 10.3(6) Affected: 9.3(14) Affected: 10.4(4) Affected: 10.3(4h) Affected: 10.5(2) Affected: 10.3(7) Affected: 10.4(5) Affected: 10.5(3) Affected: 9.3(15) Affected: 10.4(4g) Affected: 10.5(4) Affected: 10.6(1) Affected: 10.5(3t) Affected: 10.3(8) Affected: 10.4(6) Affected: 10.5(3s) Affected: 10.5(3e) Affected: 10.5(3o) Affected: 9.3(16) Affected: 10.6(1s) Affected: 10.6(2) Affected: 10.5(3p) Affected: 10.3(9) Affected: 10.6(2s) Affected: 10.6(3) Affected: 10.4(7) Affected: 10.5(5) Affected: 9.3(17) Affected: 10.6(2n) Affected: 10.6(3s)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76465",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-07T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-08T03:55:35.639Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco NX-OS Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "9.3(2)"
            },
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              "status": "affected",
              "version": "9.3(1)"
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              "status": "affected",
              "version": "9.3(1z)"
            },
            {
              "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)"
            },
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              "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)"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0026nbsp;root privileges or cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis 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\u0026nbsp;root privileges and could cause process crashes, which could result in a device reload and a DoS condition."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-590",
              "description": "Free of Memory not on the Heap",
              "lang": "en",
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            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-07T16:14:26.107Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-moam-rce-uBTzYV7",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-moam-rce-uBTzYV7"
        }
      ],
      "source": {
        "advisory": "cisco-sa-moam-rce-uBTzYV7",
        "defects": [
          "CSCwu19799"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76465",
    "datePublished": "2026-10-07T16:14:26.107Z",
    "dateReserved": "2026-08-19T12:02:03.637Z",
    "dateUpdated": "2026-10-08T03:55:35.639Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-74H7-6GF3-J457

CVE-2026-76465 (GCVE-0-2026-76465)

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