What is CVE-2026-45702?

CVE-2026-45702 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10. CVE-2026-45702 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-45702?

CVE-2026-45702 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-45702?

No patch is currently available for CVE-2026-45702. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2026-45702 actively exploited?

CVE-2026-45702 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-45702

Medium

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.

Package Linux Kernel

Published 2026-06-03

Last modified 2026-06-05

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-843

CVE-2026-45702 is classified as CWE-843

See CWE-843 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2026-45702 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

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

Exploit Vendor Advisory

Details

CVE ID CVE-2026-45702

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-03

Modified 2026-06-05

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2026-45702?

CVE-2026-45702 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . CVE-2026-45702 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-45702?

CVE-2026-45702 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-45702?

No patch is currently available for CVE-2026-45702. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2026-45702 actively exploited?

No — CVE-2026-45702 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.