CVE-2026-45702

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.

CVSS v3 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-03 19:16

Updated : 2026-07-22 20:10

NVD link : CVE-2026-45702

Mitre link : CVE-2026-45702

CVE.ORG link : CVE-2026-45702

JSON object : View

Products Affected

trustedfirmware

op-tee

CWE

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

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