What is CVE-2026-41434?

CVE-2026-41434 is a low-severity vulnerability in Op-Tee Optee OS, classified under Stack-based Buffer Overflow. CVSS score: 3.3/10. Published 2026-07-06.

How severe is CVE-2026-41434?

Low severity. CVSS v3 base score is 3.3 out of 10.

Buffer overflow in Op-Tee Optee OS

CVE-2026-41434

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 3.10.0 and prior to version 4.11.0, an unbounded recursion can crash the PKCS#11 TA. Version 4.11.0 contains a patch. No known workarounds are available.

Vulnerability class: Buffer Overflow

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Op-tee Optee_os — versions >= 3.10.0, < 4.11.0
Trustedfirmware Op-tee

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-41434?: CVE-2026-41434 is a low-severity vulnerability in Op-Tee Optee OS, classified under Stack-based Buffer Overflow. CVSS score: 3.3/10. Published 2026-07-06.
How severe is CVE-2026-41434?: Low severity. CVSS v3 base score is 3.3 out of 10.