CVE-2026-45702

5.5 mediumEPSS 0.2%

Medium (5.5) in trustedfirmware op-tee. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.5 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
CWE: CWE-843
Published: 2026-06-03
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

Affected

trustedfirmware:op-tee

References

https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5

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