CVE-2022-39344
Azure RTOS USBX vulnerable to buffer overflow
Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. Prior to version 6.1.12, the USB DFU UPLOAD functionality may be utilized to introduce a buffer overflow resulting in overwrite of memory contents. In particular cases this may allow an attacker to bypass security features or execute arbitrary code. The implementation of ux_device_class_dfu_control_request function prevents buffer overflow during handling of DFU UPLOAD command when current state is UX_SYSTEM_DFU_STATE_DFU_IDLE. This issue has been patched, please upgrade to version 6.1.12. As a workaround, add the UPLOAD_LENGTH check in all possible states.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
9.8
Azure RTOS USBX vulnerable to buffer overflow
Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. Prior to version 6.1.12, the USB DFU UPLOAD functionality may be utilized to introduce a buffer overflow resulting in overwrite of memory contents. In particular cases this may allow an attacker to bypass security features or execute arbitrary code. The implementation of ux_device_class_dfu_control_request function prevents buffer overflow during handling of DFU UPLOAD command when current state is UX_SYSTEM_DFU_STATE_DFU_IDLE. This issue has been patched, please upgrade to version 6.1.12. As a workaround, add the UPLOAD_LENGTH check in all possible states.
- Record
CVE-2022-39344- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
EUVDEUVD-2022-41817
9.8
Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. Prior to version 6.1.12, the USB DFU UPLOAD functionality may be utilized to introduce a buffer overflow resulting in overwrite of memory contents. In particular cases this may allow an attacker to bypass security features or execute arbitrary code. The implementation of ux_device_class_dfu_control_request function prevents buffer overflow during handling of DFU UPLOAD command when current state is UX_SYSTEM_DFU_STATE_DFU_IDLE. This issue has been patched, please upgrade to version 6.1.12. As a workaround, add the UPLOAD_LENGTH check in all possible states.
- Record
EUVD-2022-41817- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
9.8
Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. Prior to version 6.1.12, the USB DFU UPLOAD functionality may be utilized to introduce a buffer overflow resulting in overwrite of memory contents. In particular cases this may allow an attacker to bypass security features or execute arbitrary code. The implementation of ux_device_class_dfu_control_request function prevents buffer overflow during handling of DFU UPLOAD command when current state is UX_SYSTEM_DFU_STATE_DFU_IDLE. This issue has been patched, please upgrade to version 6.1.12. As a workaround, add the UPLOAD_LENGTH check in all possible states.
- Record
CVE-2022-39344- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
OSV
9.8
Azure RTOS USBX vulnerable to buffer overflow
Azure RTOS USBX is a USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Azure RTOS ThreadX. Prior to version 6.1.12, the USB DFU UPLOAD functionality may be utilized to introduce a buffer overflow resulting in overwrite of memory contents. In particular cases this may allow an attacker to bypass security features or execute arbitrary code. The implementation of ux_device_class_dfu_control_request function prevents buffer overflow during handling of DFU UPLOAD command when current state is UX_SYSTEM_DFU_STATE_DFU_IDLE. This issue has been patched, please upgrade to version 6.1.12. As a workaround, add the UPLOAD_LENGTH check in all possible states.
- Record
CVE-2022-39344- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-120
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-39344 is a critical vulnerability (CVSS 9.8) in Azure-rtos Usbx, published November 4, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.66%, the 85th percentile. No source names a fixed version.