CVE-2021-44149: Trustedfirmware Op-Tee

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

An issue was discovered in Trusted Firmware OP-TEE Trusted OS through 3.15.0. The OPTEE-OS CSU driver for NXP i.MX6UL SoC devices lacks security access configuration for wakeup-related registers, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a v cycle.

Affected products

• Trustedfirmware Op-Tee: up to and including 3.15.0

Published 2021-12-07. Last modified 2026-06-17.