CVE-2026-40257: op-tee from 3.21.0 (inclusive), through 4.10.0 (inclusive); +1 more affected products

CVE-2026-40257. CVSS 3.1 base score 5.5 (MEDIUM, Vendor/CNA). EPSS 0.00153 (percentile 0.04372), scored 25-Oct-2026.

Affected technology

op-tee · from 3.21.0 (inclusive), through 4.10.0 (inclusive)
trustedfirmware

optee_os · >= 3.21.0, < 4.11.0
OP-TEE

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 21:45 UTC

CWE: CWE-787
CCR priority: 22.0 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00153 · percentile 0.04372 · 2026-10-25
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-40257.html