FKIE_CVE-2021-42553

Vulnerability from fkie_nvd - Published: 2022-10-21 10:15 - Updated: 2025-05-07 21:15
Severity ?
6.8 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
vulnerability@ncsc.chhttps://github.com/STMicroelectronics/stm32_mw_usb_host
vulnerability@ncsc.chhttps://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/STMicroelectronics/stm32_mw_usb_host
af854a3a-2127-422b-91ae-364da2661108https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4Patch, Third Party Advisory
Impacted products
Vendor Product Version
st stm32_mw_usb_host -
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:st:stm32_mw_usb_host:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "1FB3C97F-2B84-4BD9-A983-04C5ED72E8F8",
              "vulnerable": true
            }
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          "negate": false,
          "operator": "OR"
        }
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de desbordamiento de b\u00fafer en la funci\u00f3n stm32_mw_usb_host de STMicroelectronics permite a un atacante ejecutar c\u00f3digo arbitrario cuando el descriptor contiene m\u00e1s endpoints que USBH_MAX_NUM_ENDPOINTS. La librer\u00eda es integrada normalmente cuando es usado un RTOS como FreeRTOS en los MCUs STM32"
    }
  ],
  "id": "CVE-2021-42553",
  "lastModified": "2025-05-07T21:15:53.440",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "vulnerability@ncsc.ch",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2022-10-21T10:15:12.470",
  "references": [
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      "source": "vulnerability@ncsc.ch",
      "url": "https://github.com/STMicroelectronics/stm32_mw_usb_host"
    },
    {
      "source": "vulnerability@ncsc.ch",
      "tags": [
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      "url": "https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4"
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  "sourceIdentifier": "vulnerability@ncsc.ch",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-120"
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      "source": "nvd@nist.gov",
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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