Is CVE-2022-39344 actively exploited?

No active exploitation of CVE-2022-39344 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-39344 be exploited remotely?

Yes. CVE-2022-39344 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-39344?

CVE-2022-39344 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-39344

CWE-120Published: November 4, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

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.

NVD Source

Risk Analysis

Azure RTOS USBX is vulnerable to a buffer overflow in the USB DFU UPLOAD functionality, which can lead to arbitrary code execution. This critical flaw carries a CVSS score of 9.8, reflecting the potential for full system compromise.

No public exploit is currently known, and the vulnerability is not in the CISA KEV catalog. It is remotely exploitable with low attack complexity.

Recommended Action

Upgrade to version 6.1.12 or later. Alternatively, implement a check for the UPLOAD_LENGTH parameter in all system states.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-39344 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.