Is CVE-2026-20430 actively exploited?

CVE-2026-20430 has no public evidence of in-the-wild exploitation as of 2026-03-02.

What is the CVSS score for CVE-2026-20430?

CVE-2026-20430 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-20430?

Patch guidance is available from mediatek security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-20430.

Fix CVE-2026-20430 - HIGH mediatek software development kit

Q: Which products are affected by CVE-2026-20430?

4 products: mediatek software development kit, openwrt openwrt, openwrt openwrt, openwrt openwrt.

Description

In wlan AP FW, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00467553; Issue ID: MSV-5151.

CVSS Metrics

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

Metadata

Primary Vendor: MEDIATEK
Published: 3/2/2026
Last Modified: 3/2/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mediatek : software_development_kitopenwrt : openwrtopenwrt : openwrtopenwrt : openwrt

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-20430. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-20430

View on NIST NVD

CVE-2026-20430 vulnerability