CVE-2021-36133 describes a TrustZone bypass vulnerability in the OPTEE-OS CSU driver for several NXP i.MX SoC devices, allowing the NonSecure World to perform arbitrary memory read/write operations on Secure World memory via a DMA-capable peripheral. With a CVSS score of 7.1 (HIGH), this local vulnerability has low attack complexity and privileges, enabling high confidentiality and integrity impacts. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for a complete TrustZone bypass warrants attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:trustedfirmware:op-tee:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.