CVE-2026-20461

Published Jul 1, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
In Modem, there is a possible out of bounds write 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: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Out-of-bounds write in MediaTek modem firmware enables remote denial of service
Type Values Removed Values Added
Title Out-of-bounds write in MediaTek modem firmware enables remote denial of service
Type Values Removed Values Added
Title Out‑of‑Bounds Write in MediaTek Modem Firmware Allows Remote Denial of Service via Rogue Base Station
Type Values Removed Values Added
Title Out‑of‑Bounds Write in MediaTek Modem Firmware Allows Remote Denial of Service via Rogue Base Station
Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Enabling Remote Denial of Service
Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Enabling Remote Denial of Service
Type Values Removed Values Added
Title Out-of-Bounds Write in MediaTek Modem Firmware Allowing Remote Denial of Service
Type Values Removed Values Added
Title Out-of-Bounds Write in MediaTek Modem Firmware Allowing Remote Denial of Service
Type Values Removed Values Added
Title Modem Out-of-Bounds Write Leading to Remote Denial of Service via Rogue Base Station
Type Values Removed Values Added
Title Modem Out-of-Bounds Write Leading to Remote Denial of Service via Rogue Base Station
Type Values Removed Values Added
Title Out of Bounds Write in MediaTek Modem Firmware Allowing Remote Denial of Service
Type Values Removed Values Added
Title Out of Bounds Write in MediaTek Modem Firmware Allowing Remote Denial of Service
Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Leading to Remote Denial of Service on MediaTek Chipsets
Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Leading to Remote Denial of Service on MediaTek Chipsets
Type Values Removed Values Added
Title Missing bounds check in Modem firmware causes remote denial of service
Type Values Removed Values Added
Title Missing bounds check in Modem firmware causes remote denial of service
Type Values Removed Values Added
Title Modem Out-of-Bounds Write Allowing Remote Denial-of-Service via Rogue Base Station
Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial‑of‑Service via Rogue Base Station Modem Out-of-Bounds Write Allowing Remote Denial-of-Service via Rogue Base Station
Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial‑of‑Service via Rogue Base Station
Type Values Removed Values Added
Title Modem Out-of-bounds Write Leading to Remote Denial of Service
Type Values Removed Values Added
Title Modem Out-of-bounds Write Leading to Remote Denial of Service
Type Values Removed Values Added
Title Out-of-bounds Write in Modem Firmware Enables Remote Denial of Service
Type Values Removed Values Added
Title Out-of-bounds Write in Modem Firmware Enables Remote Denial of Service
Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Causing Remote Denial of Service
Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Causing Remote Denial of Service
Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial of Service
Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial of Service
Type Values Removed Values Added
Title Out Of Bounds Write in MediaTek Modem Leading to Remote Denial Of Service
Type Values Removed Values Added
First Time appeared Mediatek, Inc.
Mediatek, Inc. mediatek Chipset
Vendors & Products Mediatek, Inc.
Mediatek, Inc. mediatek Chipset
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Out Of Bounds Write in MediaTek Modem Leading to Remote Denial Of Service
Type Values Removed Values Added
Description In Modem, there is a possible out of bounds write 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: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.
Weaknesses CWE-787
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
MediaTek
Published
Updated
Jul 1, 2026, 10:39 AM
Reserved
Nov 3, 2025, 1:30 AM
Status
Deferred
Published
Jul 1, 2026, 4:17 AM
Modified
Oct 25, 2026, 5:10 PM