Medium severity4.4NVD Advisory· Published Jun 3, 2026· Updated Jul 22, 2026

CVE-2026-45702

Description

OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.3.0 and prior to version 4.11.0, a type confusion vulnerability exists in OP-TEE OS when processing an FFA_MEM_SHARE request from the normal world. This only applies when OP-TEE is configured as an SPMC for S-EL0 SPs, that is, with CFG_CORE_SEL1_SPMC=y and CFG_SECURE_PARTITION=y. Version 4.11.0 fixes the issue.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Arm/Op Tee
cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*
Range: >=4.3.0,<=4.10.0
Op Tee/OP-TEEllm-fuzzy
Range: 4.3.0 - 4.10.0
Op Tee/Optee OSllm-fuzzy
Range: 4.3.0 - 4.10.0

Patches

Vulnerability mechanics

References

github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5nvdExploitVendor Advisory

News mentions

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