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CVE-2021-42553

STM32 USB Host Library Buffer Overflow

Published: Oct 21, 2022Updated: May 7, 2025 Sources: CVE List NVDCWE-120
6.8MEDIUM
NVD MITRE
EPSS Score
1.0%
Top 40.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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 summary for this CVE yet.

CVSS Vector Breakdown

AV:PAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:PAttack Vector
Physical
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-120

Affected Products

STMicroelectronics STM32Cube
commercial·CHaka stm32cube, stm32 cube
STM32 USB Host LibraryLibrary
Hardware Firmware / cpu-gpu
st
commercial·CHaka stm, stmicroelectronics
stm32 mw usb hostOn-premDriver
Hardware Firmware / printer-peripheral

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

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

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