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Vulnerability record · CVE-2026-20456 · published 1 June 2026

CVE-2026-20456: Mediatek mt7902 firmware out-of-bounds write vulnerability

Mediatek · Mt7902 Firmware

In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.

5.5 CVSS 3.1 Medium EPSS 0.10% · top 99.1% CWE-787 · Out-of-bounds write
5.5CVSS 3.1 base score
0.10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

Description

In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.

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

Affected products

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

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-20456), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.