Vulnerability-Lookup

GHSA-4MRW-VR59-VGF2

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

Details

The vulnerabilities tracked by CVE-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.

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-2026-76499"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-707"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-07T17:17:01Z",
    "severity": "CRITICAL"
  },
  "details": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\n\nThe vulnerabilities tracked by CVE-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.\n\u0026nbsp;",
  "id": "GHSA-4mrw-vr59-vgf2",
  "modified": "2026-10-07T18:32:13Z",
  "published": "2026-10-07T18:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76499"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh"
    }
  ],
  "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-2026-76499 (GCVE-0-2026-76499)

Vulnerability from cvelistv5 – Published: 2026-10-07 16:17 – Updated: 2026-10-07 17:48

Title

Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Neutralization Vulnerabilities

Summary

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.

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 17:47 UTC

CWE

CWE-707 - Improper Neutralization

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 Application Policy Infrastructure Controller (APIC)	Affected: 5.2(1g) Affected: 5.2(2e) Affected: 5.2(2f) Affected: 5.2(2g) Affected: 5.2(2h) Affected: 5.2(3f) Affected: 5.2(3e) Affected: 5.2(3g) Affected: 5.2(4d) Affected: 5.2(4e) Affected: 5.2(5d) Affected: 5.2(5c) Affected: 6.0(1g) Affected: 5.2(5e) Affected: 5.2(4f) Affected: 5.2(6e) Affected: 6.0(1j) Affected: 5.2(6g) Affected: 5.2(7f) Affected: 5.2(7g) Affected: 6.0(2h) Affected: 5.2(6h) Affected: 5.2(4h) Affected: 5.2(8d) Affected: 6.0(2j) Affected: 5.2(8e) Affected: 6.0(3d) Affected: 6.0(3e) Affected: 5.2(8f) Affected: 5.2(8g) Affected: 5.3(1d) Affected: 5.2(8h) Affected: 6.0(4c) Affected: 5.3(2a) Affected: 5.2(8i) Affected: 6.0(5h) Affected: 5.3(2b) Affected: 6.0(3g) Affected: 6.0(5j) Affected: 5.3(2c) Affected: 6.0(6c) Affected: 6.1(1f) Affected: 6.0(7e) Affected: 5.3(2d) Affected: 6.0(8d) Affected: 6.0(8e) Affected: 6.1(2f) Affected: 6.0(8f) Affected: 5.3(2e) Affected: 6.1(2g) Affected: 5.3(2f) Affected: 6.0(9c) Affected: 6.1(3f) Affected: 6.0(9d) Affected: 6.0(6g) Affected: 6.0(6h) Affected: 6.0(8h) Affected: 6.1(3g) Affected: 6.1(4h) Affected: 6.0(9e) Affected: 6.1(5e) Affected: 6.2(1f) Affected: 6.2(1g) Affected: 6.0(9f) Affected: 6.2(2e)

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76499",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-07T17:47:36.467311Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-07T17:48:13.369Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Application Policy Infrastructure Controller (APIC)",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "5.2(1g)"
            },
            {
              "status": "affected",
              "version": "5.2(2e)"
            },
            {
              "status": "affected",
              "version": "5.2(2f)"
            },
            {
              "status": "affected",
              "version": "5.2(2g)"
            },
            {
              "status": "affected",
              "version": "5.2(2h)"
            },
            {
              "status": "affected",
              "version": "5.2(3f)"
            },
            {
              "status": "affected",
              "version": "5.2(3e)"
            },
            {
              "status": "affected",
              "version": "5.2(3g)"
            },
            {
              "status": "affected",
              "version": "5.2(4d)"
            },
            {
              "status": "affected",
              "version": "5.2(4e)"
            },
            {
              "status": "affected",
              "version": "5.2(5d)"
            },
            {
              "status": "affected",
              "version": "5.2(5c)"
            },
            {
              "status": "affected",
              "version": "6.0(1g)"
            },
            {
              "status": "affected",
              "version": "5.2(5e)"
            },
            {
              "status": "affected",
              "version": "5.2(4f)"
            },
            {
              "status": "affected",
              "version": "5.2(6e)"
            },
            {
              "status": "affected",
              "version": "6.0(1j)"
            },
            {
              "status": "affected",
              "version": "5.2(6g)"
            },
            {
              "status": "affected",
              "version": "5.2(7f)"
            },
            {
              "status": "affected",
              "version": "5.2(7g)"
            },
            {
              "status": "affected",
              "version": "6.0(2h)"
            },
            {
              "status": "affected",
              "version": "5.2(6h)"
            },
            {
              "status": "affected",
              "version": "5.2(4h)"
            },
            {
              "status": "affected",
              "version": "5.2(8d)"
            },
            {
              "status": "affected",
              "version": "6.0(2j)"
            },
            {
              "status": "affected",
              "version": "5.2(8e)"
            },
            {
              "status": "affected",
              "version": "6.0(3d)"
            },
            {
              "status": "affected",
              "version": "6.0(3e)"
            },
            {
              "status": "affected",
              "version": "5.2(8f)"
            },
            {
              "status": "affected",
              "version": "5.2(8g)"
            },
            {
              "status": "affected",
              "version": "5.3(1d)"
            },
            {
              "status": "affected",
              "version": "5.2(8h)"
            },
            {
              "status": "affected",
              "version": "6.0(4c)"
            },
            {
              "status": "affected",
              "version": "5.3(2a)"
            },
            {
              "status": "affected",
              "version": "5.2(8i)"
            },
            {
              "status": "affected",
              "version": "6.0(5h)"
            },
            {
              "status": "affected",
              "version": "5.3(2b)"
            },
            {
              "status": "affected",
              "version": "6.0(3g)"
            },
            {
              "status": "affected",
              "version": "6.0(5j)"
            },
            {
              "status": "affected",
              "version": "5.3(2c)"
            },
            {
              "status": "affected",
              "version": "6.0(6c)"
            },
            {
              "status": "affected",
              "version": "6.1(1f)"
            },
            {
              "status": "affected",
              "version": "6.0(7e)"
            },
            {
              "status": "affected",
              "version": "5.3(2d)"
            },
            {
              "status": "affected",
              "version": "6.0(8d)"
            },
            {
              "status": "affected",
              "version": "6.0(8e)"
            },
            {
              "status": "affected",
              "version": "6.1(2f)"
            },
            {
              "status": "affected",
              "version": "6.0(8f)"
            },
            {
              "status": "affected",
              "version": "5.3(2e)"
            },
            {
              "status": "affected",
              "version": "6.1(2g)"
            },
            {
              "status": "affected",
              "version": "5.3(2f)"
            },
            {
              "status": "affected",
              "version": "6.0(9c)"
            },
            {
              "status": "affected",
              "version": "6.1(3f)"
            },
            {
              "status": "affected",
              "version": "6.0(9d)"
            },
            {
              "status": "affected",
              "version": "6.0(6g)"
            },
            {
              "status": "affected",
              "version": "6.0(6h)"
            },
            {
              "status": "affected",
              "version": "6.0(8h)"
            },
            {
              "status": "affected",
              "version": "6.1(3g)"
            },
            {
              "status": "affected",
              "version": "6.1(4h)"
            },
            {
              "status": "affected",
              "version": "6.0(9e)"
            },
            {
              "status": "affected",
              "version": "6.1(5e)"
            },
            {
              "status": "affected",
              "version": "6.2(1f)"
            },
            {
              "status": "affected",
              "version": "6.2(1g)"
            },
            {
              "status": "affected",
              "version": "6.0(9f)"
            },
            {
              "status": "affected",
              "version": "6.2(2e)"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-76499 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.\r\n\u0026nbsp;"
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "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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        }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-707",
              "description": "Improper Neutralization",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-07T16:17:25.662Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-hardening-apic-UOXWtfh",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-apic-UOXWtfh"
        }
      ],
      "source": {
        "advisory": "cisco-sa-hardening-apic-UOXWtfh",
        "defects": [
          "CSCwu66689"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Application Policy Infrastructure Controller Hardening Release: October 2026 - Improper Neutralization Vulnerabilities"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76499",
    "datePublished": "2026-10-07T16:17:25.662Z",
    "dateReserved": "2026-08-19T12:02:03.641Z",
    "dateUpdated": "2026-10-07T17:48:13.369Z",
    "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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-4MRW-VR59-VGF2

CVE-2026-76499 (GCVE-0-2026-76499)

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