What is CVE-2026-4179?

CVE-2026-4179 is a medium-severity vulnerability in Zephyrproject-rtos Zephyr, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.1/10. Published 2026-03-14.

How severe is CVE-2026-4179?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Zephyrproject-rtos Zephyr

CVE-2026-4179

Issues in stm32 USB device driver (drivers/usb/device/usb_dc_stm32.c) can lead to an infinite while loop.

EPSS: 0.000 (0.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

Affected products

Zephyrproject-rtos Zephyr

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9xg7-g3q3-9prf

Frequently asked questions

What is CVE-2026-4179?: CVE-2026-4179 is a medium-severity vulnerability in Zephyrproject-rtos Zephyr, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.1/10. Published 2026-03-14.
How severe is CVE-2026-4179?: Medium severity. CVSS v3 base score is 6.1 out of 10.