An integer overflow was addressed with improved input validation. 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, watchOS 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.
Problem type
- Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution
Affected products
Apple
< 26.6 - AFFECTED
< 14.8.8 - AFFECTED
< 15.7.8 - AFFECTED
< 26.6 - 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/128068
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-j475-2rj7-69hc
An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6...
https://github.com/advisories/GHSA-j475-2rj7-69hcAn integer overflow was addressed with improved input validation. 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, watchOS 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.
https://nvd.nist.gov/vuln/detail/CVE-2026-64766
https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128068
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-j475-2rj7-69hc
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-64766Click to expand
{
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"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-64766",
"assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"assignerShortName": "apple",
"dateUpdated": "2026-07-28T13:47:32.652Z",
"dateReserved": "2026-07-20T18:10:43.924Z",
"datePublished": "2026-07-27T20:14:02.814Z",
"state": "PUBLISHED"
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"containers": {
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}
],
"affected": [
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{
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{
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{
"url": "https://support.apple.com/en-us/128068"
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{
"url": "https://support.apple.com/en-us/128069"
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{
"url": "https://support.apple.com/en-us/128070"
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{
"url": "https://support.apple.com/en-us/128071"
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"adp": [
{
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-28T13:47:32.652Z"
},
"title": "CISA ADP Vulnrichment",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-190 Integer Overflow or Wraparound",
"cweId": "CWE-190",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH"
}
},
{}
]
}
]
}
}