Is CVE-2026-20407 actively exploited?

CVE-2026-20407 has no public evidence of in-the-wild exploitation as of 2026-02-04.

What is the CVSS score for CVE-2026-20407?

CVE-2026-20407 has a CVSS score of 9.3 (CRITICAL severity). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

How do I patch CVE-2026-20407?

Patch guidance is available from mediatek security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-20407.

Fix CVE-2026-20407 - CRITICAL mediatek nbiot sdk

Description

In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00464377; Issue ID: MSV-4905.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: none
User Action: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: MEDIATEK
Published: 2/2/2026
Last Modified: 2/4/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mediatek : nbiot_sdk

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-20407. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-20407

View on NIST NVD

CVE-2026-20407 vulnerability