// For flags

CVE-2021-42553

STM32 USB Host Library Buffer Overflow

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Una vulnerabilidad de desbordamiento de búfer en la función stm32_mw_usb_host de STMicroelectronics permite a un atacante ejecutar código arbitrario cuando el descriptor contiene más endpoints que USBH_MAX_NUM_ENDPOINTS. La librería es integrada normalmente cuando es usado un RTOS como FreeRTOS en los MCUs STM32

*Credits: github.com/Defonceuse
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-10-15 CVE Reserved
  • 2022-10-21 CVE Published
  • 2024-05-13 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
St
Search vendor "St"
 Stm32 Mw Usb Host
Search vendor "St" for product "Stm32 Mw Usb Host"
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Affected