CVE-2021-3625

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122 CWE-787

Affected software

Vendor	Product	Versions
zephyrproject-rtos	zephyr	>= v2.5.0, < unspecified

References

http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363Exploit, Third Party Advisory
http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-c3gr-hgvr-f363Exploit, Third Party Advisory

Timeline

Published: Oct 5, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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