CVE-2026-45702
mediumpriority · track · 22EPSS 0.002 · 5 %ileEUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (2)
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also known as (2)
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sources
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references (5)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-45702cnnvd
- https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5cnnvd
- https://github.com/OP-TEE/optee_os/tagsPatchcnnvd
- https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5enisa_euvd
- https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5ExploitVendor Advisorynvd
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