VulnerabilityAnalyzed

CVE-2026-20491

This could lead to local denial of service with User execution privileges needed.

MEDIUM 5.5EPSS 0.10%

Does this matter?

Lower severity and a low EPSS score (0.10%). Track it; it rarely justifies an emergency change on its own.

Description

In med, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10981478 (Note: For MT6890, MT6990, MT6988) / AUTO00851173 (Note: For MT2735, MT2737); Issue ID: MSV-7652.

CVSS 3.1: 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.10% probability · 1th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: mediatek/mt2735 firmware · mediatek/mt2737 firmware · mediatek/mt6890 firmware · mediatek/mt6988 firmware · mediatek/mt6990 firmware
Source: security@mediatek.com

References

https://www.mediatek.com/product-security-bulletin/August-2026Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.