CVE-2020-10021: Zephyrproject Zephyr

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Out-of-bounds Write in the USB Mass Storage memoryWrite handler with unaligned Sizes See NCC-ZEP-024, NCC-ZEP-025, NCC-ZEP-026 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.

Affected products

• Zephyrproject Zephyr: up to and including 1.14.1; from 2.1.0, before 2.2.0 (fixed in 2.2.0)

Published 2020-05-11. Last modified 2026-06-17.