Name: CVE-2021-42553: Buffer Copy without Checking Size of Input
Creator: Rapid7
Published: 2022-10-21T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-42553, CWE-120, CVSS 9.8, EPSS 0.01415

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.

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Ubuntu	—	Upgrade micropythonUpgrade micropython (Ubuntu Pro)	May 2, 2025	Oct 21, 2022

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CVSS Details

Covered by Rapid7

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