Is CVE-2022-29223 actively exploited?

No active exploitation of CVE-2022-29223 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-29223 be exploited remotely?

Yes. CVE-2022-29223 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-29223?

CVE-2022-29223 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-29223

CWE-120Published: May 24, 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. In versions prior to 6.1.10, an attacker can cause a buffer overflow by providing the Azure RTOS USBX host stack a HUB descriptor with `bNbPorts` set to a value greater than `UX_MAX_TT` which defaults to 8. For a `bNbPorts` value of 255, the implementation of `ux_host_class_hub_descriptor_get` function will modify the contents of `hub` -> `ux_host_class_hub_device` -> `ux_device_hub_tt` array violating the end boundary by 255 - `UX_MAX_TT` items. The USB host stack needs to validate the number of ports reported by the hub, and if the value is larger than UX_MAX_TT, USB stack needs to reject the request. This fix has been included in USBX release 6.1.10.

NVD Source

Technical Analysis

CVE-2022-29223 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.