What is CVE-2026-42546?

CVE-2026-42546 is a low-severity vulnerability in Op-tee Optee_os, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 3.8/10. Published 2026-07-06.

How severe is CVE-2026-42546?

Low severity. CVSS v3 base score is 3.8 out of 10.

Resource exhaustion in Op-tee Optee_os

CVE-2026-42546

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 3.3.0 and prior to version 4.11.0, a resource leak exists…

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L.

Affected products

Op-tee Optee_os — versions >= 3.3.0, < 4.11.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-42546?: CVE-2026-42546 is a low-severity vulnerability in Op-tee Optee_os, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 3.8/10. Published 2026-07-06.
How severe is CVE-2026-42546?: Low severity. CVSS v3 base score is 3.8 out of 10.