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    CVE-2021-36133

    The OPTEE-OS CSU driver for NXP i.MX SoC devices lacks security access configuration for several models, resulting in TrustZone bypass because the NonSecure World can perform arbitrary memory read/write operations on Secure World memory. This involves a DMA capable peripheral.

    Published:Dec 7, 2021
    Last Modified:Jun 5, 2026
    EPS:Dec 7, 2021
    EPSS Score:0.00055
    CVSS Score:7.1

    Affected Products

    Vendor
    Nxp
    Product
    I.mx6sx
    Vendor
    Nxp
    Product
    I.mx 6
    Vendor
    Nxp
    Product
    I.mx 6solox
    Vendor
    Nxp
    Product
    I.mx 6ull
    Vendor
    Nxp
    Product
    I.mx 6ulz
    Vendor
    Nxp
    Product
    I.mx 7ds
    Vendor
    Trustedfirmware
    Product
    Op-tee

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High