CVE-2021-36133

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Summary

CVECVE-2021-36133
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-07 21:15:08 UTC
Updated2026-06-05 20:13:25 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.000550000 probability, percentile 0.174230000 (date 2026-06-11)

Problem Types: CWE-732 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
2.0[email protected]Primary3.6AV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:L/AC:L/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Nxp I.mx6sx - All All All
Hardware Nxp I.mx 6 - All All All
Hardware Nxp I.mx 6solox - All All All
Hardware Nxp I.mx 6ull - All All All
Hardware Nxp I.mx 6ulz - All All All
Hardware Nxp I.mx 7ds - All All All
Operating System Trustedfirmware Op-tee - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
advisories/Security_Advisory-Ref_FSC-HWSEC-VR2021-0001-OP-TEE_TrustZone_bypass.txt at master · f-secure-foundry/advisories · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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