Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-4179

CVE-2026-4179MEDIUM

zephyrproject-rtos Zephyr — stm32: usb: Infinite while loop in Interrupt Handler

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  N  L  H    6.1   .0015    4.1     —

AFFECTED
  Product  Versions     Fixed
  Zephyr   unspecified  —

TIMELINE
  Mar 14  Reserved by zephyr
  Mar 14  Published (CNA: zephyr)
  Oct 15  EXPLOIT PUBLISHED — CVE-2026-4179 (zephyrproject-rtos Zephyr). Public exploit reference added.

CWE-835 · CNA: zephyr · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

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

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 14, 2026	Reserved	Reserved by zephyr
March 14, 2026	Published	Published (CNA: zephyr)
October 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-4179 (zephyrproject-rtos Zephyr). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
zephyrproject-rtos	Zephyr	—	—	—

Weaknesses

CWE-835

References (1)

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9xg7-g3q3-9prf [Exploit, Patch, Vendor Advisory]

Authoritative record: CVE-2026-4179 at cve.org

Vendors: zephyrproject-rtos

Weaknesses: CWE-835

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-4179 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.