---
id: CVE-2026-20479
title: 'In Modem, there is a possible out of bounds read due to a missing bounds check'
summary: >-
  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
  privilege…
severity: none
cwe:
  - CWE-125
published: '2026-08-03'
updated: '2026-08-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20479'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/August-2026'
    label: security@mediatek.com
tags:
  - nvd
ingestedAt: '2026-08-03T06:23:47.522Z'
epss: 0.00706
epssPercentile: 0.51388
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.