VulnerabilityAnalyzed

CVE-2026-20478

In Audio HAL, there is a possible out of bounds write due to a heap buffer overflow.

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 Audio HAL, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10981454 (Note: For MT6880, MT6890, MT6988, MT6990) / AUTO00851293 (Note: For MT2735, MT2737); Issue ID: MSV-7638.

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/mt6880 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.