VULNERABILITY INTELLIGENCE

CVE-2021-3625

CVSS score9.6 CRITICAL

EPSS probability2.31%

CISA KEVNot currently listed

Published2021-10-05

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H

Description

Buffer overflow in Zephyr USB DFU DNLOAD. Zephyr versions >= v2.5.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363

Weakness classification

vulnerabilities@zephyrproject.org: CWE-122
nvd@nist.gov: CWE-787

Primary references

vulnerabilities@zephyrproject.org — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory