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TI-2021-19849 Aliases CVE-2021-44149

An issue was discovered in Trusted Firmware OP-TEE Trusted OS through 3.15.0.

Priority LOW 34Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.0035 28th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*up to 3.15.0VulnerableOP-TEE
cpe:2.3:h:nxp:i.mx_6ultralite:-:*:*:*:*:*:*:*not specified by NVDRunning onNXP
  • cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:* Versions up to 3.15.0 Vulnerable ·OP-TEE
  • cpe:2.3:h:nxp:i.mx_6ultralite:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NXP

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-44149

References

Advisory 2

  • TI-2022-22796 OP-TEE Trusted OS vulnerable to Improper Validation of Array Index in the cleanup_shm_refs function CVSS 3.1HIGH 8.8
  • TI-2026-29072 OP-TEE has a Use-After-Free race in FF-A shared-memory teardown CVSS 3.1HIGH 7.8
  • TI-2023-21925 OP-TEE double free in shdr_verify_signature CVSS 3.1HIGH 7.4
  • TI-2026-33359 OP-TEE vulnerable to ECDH private key recovery CVSS 3.1MEDIUM 4.7
  • TI-2019-16063 Integer overflow in OP-TEE CVSS 3.0CRITICAL 9.8
  • TI-2019-16062 Integer overflow in OP-TEE CVSS 3.0CRITICAL 9.8
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences