CVE-2026-20479CWE-125

CVE-2026-20479

High · published August 3, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
52.8
In the wild
Unconfirmed
What it is

In Modem, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00741071; Issue ID: MSV-7620.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00706 · 52.8th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-08-03T07:16Z
Affected products (19)
ProductVersionsFixed in
mediatek/mt2735_firmwareall versions—
mediatek/mt6833_firmwareall versions—
mediatek/mt6853_firmwareall versions—
mediatek/mt6855_firmwareall versions—
mediatek/mt6873_firmwareall versions—
mediatek/mt6875_firmwareall versions—
mediatek/mt6877_firmwareall versions—
mediatek/mt6880_firmwareall versions—
mediatek/mt6883_firmwareall versions—
mediatek/mt6885_firmwareall versions—
mediatek/mt6889_firmwareall versions—
mediatek/mt6890_firmwareall versions—
mediatek/mt6891_firmwareall versions—
mediatek/mt6893_firmwareall versions—
mediatek/mt8675_firmwareall versions—
mediatek/mt8771_firmwareall versions—
mediatek/mt8791_firmwareall versions—
mediatek/mt8791t_firmwareall versions—
mediatek/mt8797_firmwareall versions—
References (1)
https://www.mediatek.com/product-security-bulletin/August-2026 · [email protected]
EPSS history
Timeline
  • 03 AUG 02:05Z
    In Modem, there is a possible out of bounds read due to a missing bounds check
    cvelistv5