Medium 6.1Published Mar 14, 2026

CVE-2026-4179stm32: usb: Infinite while loop in Interrupt Handler

Updated under an hour ago (Oct 27, 2026, 1:00 PM ET)

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It affects zephyrproject-rtos Zephyr and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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

CVSS: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Weakness (CWE): CWE-835
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: zephyr
NVD analysis: Analyzed
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

zephyrproject-rtos Zephyr zephyrproject_rtos:zephyr (from the name)	before 3.7.2; from 4.0.0 before 4.2.2; from 4.3.0 before 4.3.1	CNA record
zephyrproject zephyr zephyrproject:zephyr	through 4.3.0	NVD

References

References

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9xg7-g3q3-9prf	exploit, patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.