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
< 26.6 - AFFECTED
< 14.8.8 - AFFECTED
< 15.7.8 - AFFECTED
< 26.6 - AFFECTED
< 26.6 - AFFECTED
< 26.6 - AFFECTED
References
https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128069
https://support.apple.com/en-us/128070
https://support.apple.com/en-us/128071
https://support.apple.com/en-us/128072
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-v42xAn 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.
https://nvd.nist.gov/vuln/detail/CVE-2026-64770
https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128069
https://support.apple.com/en-us/128070
https://support.apple.com/en-us/128071
https://support.apple.com/en-us/128072
https://github.com/advisories/GHSA-2h3r-jwvh-v42x
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-64770Click 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"
}
]
},
{
"vendor": "Apple",
"product": "macOS",
"versions": [
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},
{
"version": "0",
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},
{
"version": "0",
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}
]
},
{
"vendor": "Apple",
"product": "tvOS",
"versions": [
{
"version": "0",
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"versionType": "custom",
"lessThan": "26.6"
}
]
},
{
"vendor": "Apple",
"product": "visionOS",
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}
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"problemTypes": [
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"descriptions": [
{
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"description": "A remote attacker may be able to cause unexpected application termination or heap corruption"
}
]
}
],
"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"
}
]
},
"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"
}
},
{}
]
}
]
}
}