2026-07-27 20:14CVE-2026-64770apple
PUBLISHED5.2

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.

Problem type

  • A remote attacker may be able to cause unexpected application termination or heap corruption

Affected products

Apple

iOS and iPadOS

< 26.6 - AFFECTED

macOS

< 14.8.8 - AFFECTED

< 15.7.8 - AFFECTED

< 26.6 - AFFECTED

tvOS

< 26.6 - AFFECTED

visionOS

< 26.6 - AFFECTED

References

GitHub Security Advisories

GHSA-2h3r-jwvh-v42x

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in...

https://github.com/advisories/GHSA-2h3r-jwvh-v42x

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.

JSON source

https://cveawg.mitre.org/api/cve/CVE-2026-64770
Click to expand
{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-64770",
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "dateUpdated": "2026-07-28T13:49:40.111Z",
    "dateReserved": "2026-07-20T18:10:43.924Z",
    "datePublished": "2026-07-27T20:14:00.344Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple",
        "dateUpdated": "2026-07-27T20:14:00.344Z"
      },
      "descriptions": [
        {
          "lang": "en",
          "value": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption."
        }
      ],
      "affected": [
        {
          "vendor": "Apple",
          "product": "iOS and iPadOS",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "26.6"
            }
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        },
        {
          "vendor": "Apple",
          "product": "macOS",
          "versions": [
            {
              "version": "0",
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              "lessThan": "14.8.8"
            },
            {
              "version": "0",
              "status": "affected",
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              "version": "0",
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        {
          "vendor": "Apple",
          "product": "tvOS",
          "versions": [
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              "version": "0",
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        {
          "vendor": "Apple",
          "product": "visionOS",
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          "descriptions": [
            {
              "lang": "en",
              "description": "A remote attacker may be able to cause unexpected application termination or heap corruption"
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          ]
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      ],
      "references": [
        {
          "url": "https://support.apple.com/en-us/128066"
        },
        {
          "url": "https://support.apple.com/en-us/128067"
        },
        {
          "url": "https://support.apple.com/en-us/128069"
        },
        {
          "url": "https://support.apple.com/en-us/128070"
        },
        {
          "url": "https://support.apple.com/en-us/128071"
        },
        {
          "url": "https://support.apple.com/en-us/128072"
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    "adp": [
      {
        "providerMetadata": {
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP",
          "dateUpdated": "2026-07-28T13:49:40.111Z"
        },
        "title": "CISA ADP Vulnrichment",
        "problemTypes": [
          {
            "descriptions": [
              {
                "lang": "en",
                "description": "CWE-787 Out-of-bounds Write",
                "cweId": "CWE-787",
                "type": "CWE"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "version": "3.1",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "attackVector": "NETWORK",
              "attackComplexity": "LOW",
              "privilegesRequired": "NONE",
              "userInteraction": "NONE",
              "scope": "UNCHANGED",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL"
            }
          },
          {}
        ]
      }
    ]
  }
}