---
id: CVE-2026-20539
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-126
vendor: 'MediaTek, Inc.'
product: MediaTek chipset
affected:
  - mediatek_chipset MT2716
  - mediatek_chipset MT2735
  - mediatek_chipset MT2737
  - mediatek_chipset MT6739
  - mediatek_chipset MT6761
  - mediatek_chipset MT6762
  - mediatek_chipset MT6763
  - mediatek_chipset MT6765
  - mediatek_chipset MT6767
  - mediatek_chipset MT6768
  - mediatek_chipset MT6769
  - mediatek_chipset MT6771
  - mediatek_chipset MT6779
  - mediatek_chipset MT6781
  - mediatek_chipset MT6783
  - mediatek_chipset MT6785
  - mediatek_chipset MT6789
  - mediatek_chipset MT6813
  - mediatek_chipset MT6815
  - mediatek_chipset MT6833
  - mediatek_chipset MT6835
  - mediatek_chipset MT6853
  - mediatek_chipset MT6855
  - mediatek_chipset MT6858
  - mediatek_chipset MT6873
  - mediatek_chipset MT6875
  - mediatek_chipset MT6877
  - mediatek_chipset MT6878
  - mediatek_chipset MT6879
  - mediatek_chipset MT6880
  - mediatek_chipset MT6881
  - mediatek_chipset MT6883
  - mediatek_chipset MT6885
  - mediatek_chipset MT6886
  - mediatek_chipset MT6889
  - mediatek_chipset MT6890
  - mediatek_chipset MT6891
  - mediatek_chipset MT6893
  - mediatek_chipset MT6895
  - mediatek_chipset MT6896
  - mediatek_chipset MT6897
  - mediatek_chipset MT6899
  - mediatek_chipset MT6980
  - mediatek_chipset MT6982
  - mediatek_chipset MT6983
  - mediatek_chipset MT6985
  - mediatek_chipset MT6986
  - mediatek_chipset MT6988
  - mediatek_chipset MT6989
  - mediatek_chipset MT6990
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T02:16:52.883'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20539'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/October-2026'
    label: security@mediatek.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T02:10:36.193Z'
---

## 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: MOLY01774038; Issue ID: MSV-8913.

## Remediation

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