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Vulnerability record · CVE-2026-20423 · published 2 March 2026

CVE-2026-20423: Mediatek nbiot sdk out-of-bounds write vulnerability

Mediatek · Nbiot Sdk

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.

7.8 CVSS 3.1 High EPSS 0.12% · top 98.3% CWE-749 · CWE-749CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-20423), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.