What is CVE-2022-39344?

CVE-2022-39344 is a critical-severity vulnerability in Azure-rtos Usbx, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-11-04.

How severe is CVE-2022-39344?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-39344 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Azure-rtos Usbx

CVE-2022-39344

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…

Vulnerability class: Buffer Overflow

EPSS: 0.014 (81.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Azure-rtos Usbx — versions < 6.1.12

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

github.com/azure-rtos/usbx/security/advisories/GHSA-m9p8-xrp7-vvqp

Frequently asked questions

What is CVE-2022-39344?: CVE-2022-39344 is a critical-severity vulnerability in Azure-rtos Usbx, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2022-11-04.
How severe is CVE-2022-39344?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-39344 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.