CVE Explorer

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4f188c8c8489739af2aca6b1a8bcbef8bb833a7d0eb1a3d7950aa63d48d77c20

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"optee_os","vendor":"OP-TEE","versions":[{"status":"affected","version":">= 4.3.0, < 4.11.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:cd670b42e2c3011980ea584450c0edcf87055a2cc933b3e673a8aa282ada93cd · sha256:e4b9145a9dfcb403… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":4.4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:cd670b42e2c3011980ea584450c0edcf87055a2cc933b3e673a8aa282ada93cd · sha256:e4b9145a9dfcb403… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-843","description":"CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:cd670b42e2c3011980ea584450c0edcf87055a2cc933b3e673a8aa282ada93cd · sha256:e4b9145a9dfcb403… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OP-TEE/optee_os/security/advisories/GHSA-86pj-8xgw-66p5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:cd670b42e2c3011980ea584450c0edcf87055a2cc933b3e673a8aa282ada93cd · sha256:e4b9145a9dfcb403… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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