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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-77237",
"assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"state": "PUBLISHED",
"assignerShortName": "AMZN",
"dateReserved": "2026-08-20T18:42:40.533Z",
"datePublished": "2026-08-21T17:52:13.360Z",
"dateUpdated": "2026-08-21T20:15:45.332Z"
},
"containers": {
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"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"shortName": "AMZN",
"dateUpdated": "2026-08-21T20:15:45.332Z"
},
"title": "Missing type validation in xQueueAddToSet in FreeRTOS-Kernel",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-843",
"description": "CWE-843 Access of resource using incompatible type ('type confusion')",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-125",
"description": "CWE-125 Out-of-bounds read",
"type": "CWE"
}
]
}
],
"impacts": [
{
"capecId": "CAPEC-129",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-129 Pointer Manipulation"
}
]
}
],
"affected": [
{
"vendor": "FreeRTOS",
"product": "FreeRTOS-Kernel",
"versions": [
{
"status": "affected",
"version": "7.4.0",
"lessThanOrEqual": "11.3.0",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
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"operator": "OR",
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"negate": false,
"cpeMatch": [
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"vulnerable": true,
"criteria": "cpe:2.3:a:freertos:freertos-kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "7.4.0",
"versionEndIncluding": "11.3.0"
}
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],
"descriptions": [
{
"lang": "en",
"value": "Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports with configUSE_QUEUE_SETS=1 to read privileged kernel memory. To remediate this issue, users should upgrade to version 11.3.1 or later.",
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"value": "<p>Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports with configUSE_QUEUE_SETS=1 to read privileged kernel memory.&nbsp;To remediate this issue, users should upgrade to version&nbsp;11.3.1 or later.</p>"
}
]
}
],
"references": [
{
"url": "https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1",
"tags": [
"patch"
]
},
{
"url": "https://aws.amazon.com/security/security-bulletins/2026-086-aws/",
"tags": [
"vendor-advisory"
]
},
{
"url": "https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-9wvc-hqvx-5wf5",
"tags": [
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"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE",
"baseSeverity": "MEDIUM",
"baseScore": 6.5,
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"
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"subConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "HIGH",
"baseScore": 8.2,
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N"
}
}
],
"credits": [
{
"lang": "en",
"value": "NVIDIA",
"type": "finder"
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],
"source": {
"discovery": "UNKNOWN"
},
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"metrics": [
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"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-77237",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
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{
"Automatable": "no"
},
{
"Technical Impact": "partial"
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],
"version": "2.0.3",
"timestamp": "2026-08-21T19:44:13.987045Z"
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],
"title": "CISA ADP Vulnrichment",
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"shortName": "CISA-ADP",
"dateUpdated": "2026-08-21T20:08:37.214Z"
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}