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vuln-cve/data/2021/42xxx/CVE-2021-42553.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"cveMetadata": {
"state": "PUBLISHED",
"cveId": "CVE-2021-42553",
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"assignerShortName": "NCSC.ch",
"dateUpdated": "2025-05-07T20:10:49.445Z",
"dateReserved": "2021-10-15T00:00:00.000Z",
"datePublished": "2022-10-21T00:00:00.000Z"
},
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"title": "STM32 USB Host Library Buffer Overflow",
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"shortName": "NCSC.ch",
"dateUpdated": "2023-03-07T00:00:00.000Z"
},
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"value": "A buffer overflow vulnerability in stm32_mw_usb_host of STMicroelectronics in versions before 3.5.1 allows an attacker to execute arbitrary code when the descriptor contains more endpoints than USBH_MAX_NUM_ENDPOINTS. The library is typically integrated when using a RTOS such as FreeRTOS on STM32 MCUs."
}
],
"affected": [
{
"vendor": "STMicroelectronics STM32Cube ",
"product": "STM32 USB Host Library",
"versions": [
{
"version": "all",
"status": "affected",
"lessThan": "3.5.1",
"versionType": "custom"
}
]
}
],
"references": [
{
"url": "https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4"
},
{
"url": "https://github.com/STMicroelectronics/stm32_mw_usb_host"
}
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"credits": [
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"value": "github.com/Defonceuse"
}
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"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"attackVector": "PHYSICAL",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH",
"baseScore": 6.8,
"baseSeverity": "MEDIUM"
}
}
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"problemTypes": [
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{
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"description": "buffer overflow"
}
]
}
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"shortName": "CVE",
"dateUpdated": "2024-08-04T03:38:49.280Z"
},
"title": "CVE Program Container",
"references": [
{
"url": "https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4",
"tags": [
"x_transferred"
]
},
{
"url": "https://github.com/STMicroelectronics/stm32_mw_usb_host",
"tags": [
"x_transferred"
]
}
]
},
{
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-120",
"lang": "en",
"description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
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"metrics": [
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"other": {
"type": "ssvc",
"content": {
"timestamp": "2025-05-07T20:06:01.309946Z",
"id": "CVE-2021-42553",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
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