CVE-2026-64767

Full vulnerability record from the local CVENow database.

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8.2, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

Severity

CRITICAL

CVSS score

9.8 (v3.1)

Vulnerability status

Modified

Source identifier

[email protected]

Published

2026-07-27 21:17:14.823000

Last modified

2026-10-26 21:18:34.433000

View original CVE JSON

{
  "id": "CVE-2026-64767",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-27T21:17:14.823",
  "lastModified": "2026-10-26T21:18:34.433",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8.2, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "macOS",
          "versions": [
            {
              "version": "0",
              "lessThan": "14.8.8",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "0",
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              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "15.8.2",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "26.6",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
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          "timestamp": "2026-07-28T14:02:03.579422Z",
          "id": "CVE-2026-64767",
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            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
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      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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              "matchCriteriaId": "9FFAC61B-E4F2-49AF-9897-96D35FAD611C"
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  "references": [
    {
      "url": "https://support.apple.com/en-us/128067",
      "source": "[email protected]",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ]
    },
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      "url": "https://support.apple.com/en-us/128071",
      "source": "[email protected]",
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}