A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption.
Problem type
- Connecting to a malicious NFS server may lead to kernel memory corruption
Affected products
Apple
< 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
GitHub Security Advisories
GHSA-qc34-g3j9-jc55
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6...
https://github.com/advisories/GHSA-qc34-g3j9-jc55A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption.
https://nvd.nist.gov/vuln/detail/CVE-2026-28931
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://github.com/advisories/GHSA-qc34-g3j9-jc55
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-28931Click to expand
{
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"cveId": "CVE-2026-28931",
"assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
"assignerShortName": "apple",
"dateUpdated": "2026-07-28T13:41:35.841Z",
"dateReserved": "2026-03-03T16:36:03.987Z",
"datePublished": "2026-07-27T20:14:05.946Z",
"state": "PUBLISHED"
},
"containers": {
"cna": {
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"shortName": "apple",
"dateUpdated": "2026-07-27T20:14:05.946Z"
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"descriptions": [
{
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"value": "A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption."
}
],
"affected": [
{
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"version": "0",
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"versionType": "custom",
"lessThan": "26.6"
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{
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}
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},
{
"vendor": "Apple",
"product": "tvOS",
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"references": [
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},
{
"url": "https://support.apple.com/en-us/128067"
},
{
"url": "https://support.apple.com/en-us/128068"
},
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},
"adp": [
{
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-28T13:41:35.841Z"
},
"title": "CISA ADP Vulnrichment",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')",
"cweId": "CWE-120",
"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"
}
},
{}
]
}
]
}
}