CVE-2026-20478CWE-787

CVE-2026-20478

Medium · published August 3, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
3.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00145 · 3.4th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-08-03T07:16Z
Affected products (6)
ProductVersionsFixed in
mediatek/mt2735_firmwareall versions—
mediatek/mt2737_firmwareall versions—
mediatek/mt6880_firmwareall versions—
mediatek/mt6890_firmwareall versions—
mediatek/mt6988_firmwareall versions—
mediatek/mt6990_firmwareall versions—
References (1)
https://www.mediatek.com/product-security-bulletin/August-2026 · [email protected]
EPSS history
Timeline
  • 03 AUG 02:05Z
    In Audio HAL, there is a possible out of bounds write due to a heap buffer overflow
    cvelistv5