{"id":"CVE-2026-4179","title":"stm32: usb: Infinite while loop in Interrupt Handler","summary":"Issues in stm32 USB device driver (drivers/usb/device/usb_dc_stm32.c) can lead to an infinite while loop.","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","cvssSource":"cna","cwe":["CWE-835"],"vendor":"zephyrproject-rtos","product":"Zephyr","affected":["Zephyr < 3.7.2","Zephyr >= 4.0.0 < 4.2.2","Zephyr >= 4.3.0 < 4.3.1"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-03-16T19:21:06.615239Z"},"exploitAvailable":true,"published":"2026-03-14","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:10:24.412Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-4179","references":[{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-9xg7-g3q3-9prf"}],"tags":["cve.org","exploit-available"],"epss":0.00154,"epssPercentile":0.04071,"ingestedAt":"2026-10-15T22:48:25.578Z","slug":"CVE-2026-4179","body":"## Overview\n\nIssues in stm32 USB device driver (drivers/usb/device/usb_dc_stm32.c) can lead to an infinite while loop.\n\n## Affected\n\n- `Zephyr < 3.7.2`\n- `Zephyr >= 4.0.0 < 4.2.2`\n- `Zephyr >= 4.3.0 < 4.3.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}