{
  "modified": "2025-08-09T19:01:27Z",
  "published": "2021-12-07T21:15:08Z",
  "id": "CVE-2021-36133",
  "details": "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.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/f-secure-foundry/advisories/blob/master/Security_Advisory-Ref_FSC-HWSEC-VR2021-0001-OP-TEE_TrustZone_bypass.txt"
    }
  ]
}