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CVE-2021-42553

9.8 critical SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 9.8 · stNVD modified 2026-10-08 18:23

Affected (CPE criteria) 1

  • cpe:2.3:a:st:stm32_mw_usb_host:*:*:*:*:*:*:*:*

References 4