CVE-2026-20423

Name: CVE-2026-20423
Creator: NVD / NIST
Published: 2026-03-02T09:16:15.34+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.12%

Last modified Jun 17, 2026

CVE-2026-20423 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In wlan STA driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. EPSS estimates a 0.12% chance of exploitation in the next 30 days.

Description

In wlan STA driver, there is a possible out of bounds write 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: WCNCR00465314; Issue ID: MSV-4956.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.12%

2.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mediatek	Nbiot Sdk	<= 3.8

References

https://corp.mediatek.com/product-security-bulletin/March-2026Vendor Advisory

Timeline

Published: Mar 2, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-20423?

How severe is CVE-2026-20423?

CVE-2026-20423 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.12% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20423?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20423?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST