CVE-2021-42553 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.01415.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
St	Stm32 Mw Usb Host

Configuration 1 [-]

cpe:2.3:a:st:stm32_mw_usb_host:-:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2021-29521	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.
Ubuntu USN	USN-7472-1	Micropython vulnerabilities

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/STMicroelectronics/stm32_mw_usb_host
https://github.com/STMicroelectronics/stm32_mw_usb_host/pull/4

History

Wed, 16 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00136}`	epss `{'score': 0.00182}`

Wed, 07 May 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published: 2022-10-21T00:00:00.000Z

Updated: 2025-05-07T20:10:49.445Z

Reserved: 2021-10-15T00:00:00.000Z

Link: CVE-2021-42553

Vulnrichment

Updated: 2024-08-04T03:38:49.280Z

NVD

Status : Modified

Published: 2022-10-21T10:15:12.470

Modified: 2025-05-07T21:15:53.440

Link: CVE-2021-42553

Redhat

No data.

OpenCVE Enrichment

No data.

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