CVE-2026-20460 - Vulnerability Details

- MediaTek Modem Firmware Information Disclosure via Rogue Base Station

Description

In Modem, there is a possible information disclosure due to improper input validation. This could lead to remote information disclosure, 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: MOLY01811421; Issue ID: MSV-6788.

Published: 2026-07-01

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

MediaTek, Inc.

MediaTek chipset

unaffected

Version	Status	Constraints
`MT2735`	affected	—
`MT2737`	affected	—
`MT6779`	affected	—
`MT6781`	affected	—
`MT6783`	affected	—
`MT6785`	affected	—
`MT6789`	affected	—
`MT6813`	affected	—
`MT6833`	affected	—
`MT6835`	affected	—
`MT6853`	affected	—
`MT6855`	affected	—
`MT6858`	affected	—
`MT6873`	affected	—
`MT6875`	affected	—
`MT6877`	affected	—
`MT6878`	affected	—
`MT6879`	affected	—
`MT6880`	affected	—
`MT6883`	affected	—
`MT6885`	affected	—
`MT6886`	affected	—
`MT6889`	affected	—
`MT6890`	affected	—
`MT6891`	affected	—
`MT6893`	affected	—
`MT6895`	affected	—
`MT6896`	affected	—
`MT6897`	affected	—
`MT6899`	affected	—
`MT6980`	affected	—
`MT6983`	affected	—
`MT6985`	affected	—
`MT6986D`	affected	—
`MT6988`	affected	—
`MT6989`	affected	—
`MT6990`	affected	—
`MT6991`	affected	—
`MT6993`	affected	—
`MT8673`	affected	—
`MT8675`	affected	—
`MT8676`	affected	—
`MT8678`	affected	—
`MT8755`	affected	—
`MT8765`	affected	—
`MT8766`	affected	—
`MT8766R`	affected	—
`MT8768`	affected	—
`MT8771`	affected	—
`MT8775`	affected	—
`MT8781`	affected	—
`MT8786`	affected	—
`MT8788`	affected	—
`MT8788E`	affected	—
`MT8789`	affected	—
`MT8791`	affected	—
`MT8791T`	affected	—
`MT8792`	affected	—
`MT8793`	affected	—
`MT8795T`	affected	—
`MT8796`	affected	—
`MT8797`	affected	—
`MT8798`	affected	—
`MT8863`	affected	—
`MT8873`	affected	—
`MT8883`	affected	—
`MT8893`	affected	—

No data.

Vendor Product Confidence Versions

Mediatek, Inc.

Mediatek Chipset

100%

Version	Status	Scheme	Platform
`MT2735`	affected	generic	—
`MT2737`	affected	generic	—
`MT6779`	affected	generic	—
`MT6781`	affected	generic	—
`MT6783`	affected	generic	—
`MT6785`	affected	generic	—
`MT6789`	affected	generic	—
`MT6813`	affected	generic	—
`MT6833`	affected	generic	—
`MT6835`	affected	generic	—
`MT6853`	affected	generic	—
`MT6855`	affected	generic	—
`MT6858`	affected	generic	—
`MT6873`	affected	generic	—
`MT6875`	affected	generic	—
`MT6877`	affected	generic	—
`MT6878`	affected	generic	—
`MT6879`	affected	generic	—
`MT6880`	affected	generic	—
`MT6883`	affected	generic	—
`MT6885`	affected	generic	—
`MT6886`	affected	generic	—
`MT6889`	affected	generic	—
`MT6890`	affected	generic	—
`MT6891`	affected	generic	—
`MT6893`	affected	generic	—
`MT6895`	affected	generic	—
`MT6896`	affected	generic	—
`MT6897`	affected	generic	—
`MT6899`	affected	generic	—
`MT6980`	affected	generic	—
`MT6983`	affected	generic	—
`MT6985`	affected	generic	—
`MT6986D`	affected	generic	—
`MT6988`	affected	generic	—
`MT6989`	affected	generic	—
`MT6990`	affected	generic	—
`MT6991`	affected	generic	—
`MT6993`	affected	generic	—
`MT8673`	affected	generic	—
`MT8675`	affected	generic	—
`MT8676`	affected	generic	—
`MT8678`	affected	generic	—
`MT8755`	affected	generic	—
`MT8765`	affected	generic	—
`MT8766`	affected	generic	—
`MT8766R`	affected	generic	—
`MT8768`	affected	generic	—
`MT8771`	affected	generic	—
`MT8775`	affected	generic	—
`MT8781`	affected	generic	—
`MT8786`	affected	generic	—
`MT8788`	affected	generic	—
`MT8788E`	affected	generic	—
`MT8789`	affected	generic	—
`MT8791`	affected	generic	—
`MT8791T`	affected	generic	—
`MT8792`	affected	generic	—
`MT8793`	affected	generic	—
`MT8795T`	affected	generic	—
`MT8796`	affected	generic	—
`MT8797`	affected	generic	—
`MT8798`	affected	generic	—
`MT8863`	affected	generic	—
`MT8873`	affected	generic	—
`MT8883`	affected	generic	—
`MT8893`	affected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00174.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://corp.mediatek.com/product-security-bulletin/July-2026

History

Tue, 07 Jul 2026 09:45:00 +0000

Type	Values Removed	Values Added
Title		MediaTek Modem Firmware Information Disclosure via Rogue Base Station

Mon, 06 Jul 2026 15:45:00 +0000

Type	Values Removed	Values Added
Title	Modem Firmware Improper Input Validation Enables Remote Information Disclosure

Sun, 05 Jul 2026 22:30:00 +0000

Type	Values Removed	Values Added
Title		Modem Firmware Improper Input Validation Enables Remote Information Disclosure

Sat, 04 Jul 2026 22:45:00 +0000

Type	Values Removed	Values Added
Title	Modem Remote Information Disclosure via Rogue Base Station

Sat, 04 Jul 2026 11:30:00 +0000

Type	Values Removed	Values Added
Title		Modem Remote Information Disclosure via Rogue Base Station

Fri, 03 Jul 2026 23:15:00 +0000

Type	Values Removed	Values Added
Title	MediaTek Modem Firmware Remote Information Disclosure via Rogue Base Station

Fri, 03 Jul 2026 12:00:00 +0000

Type	Values Removed	Values Added
Title		MediaTek Modem Firmware Remote Information Disclosure via Rogue Base Station

Fri, 03 Jul 2026 05:00:00 +0000

Type	Values Removed	Values Added
Title	Remote Information Disclosure via Improper Input Validation in MediaTek Modem Firmware

Thu, 02 Jul 2026 22:15:00 +0000

Type	Values Removed	Values Added
Title		Remote Information Disclosure via Improper Input Validation in MediaTek Modem Firmware

Thu, 02 Jul 2026 14:00:00 +0000

Type	Values Removed	Values Added
Title	MediaTek Modem Remote Information Disclosure via Improper Input Validation

Thu, 02 Jul 2026 08:30:00 +0000

Type	Values Removed	Values Added
Title		MediaTek Modem Remote Information Disclosure via Improper Input Validation

Thu, 02 Jul 2026 01:45:00 +0000

Type	Values Removed	Values Added
Title	Improper Input Validation Enables Remote Information Disclosure in MediaTek Modem

Wed, 01 Jul 2026 22:00:00 +0000

Type	Values Removed	Values Added
Title		Improper Input Validation Enables Remote Information Disclosure in MediaTek Modem

Wed, 01 Jul 2026 17:30:00 +0000

Type	Values Removed	Values Added
Title	Modem Firmware Improper Input Validation Leading to Remote Information Disclosure

Wed, 01 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mediatek, Inc. Mediatek, Inc. mediatek Chipset
Vendors & Products		Mediatek, Inc. Mediatek, Inc. mediatek Chipset

Wed, 01 Jul 2026 11:30:00 +0000

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:H/I:N/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 01 Jul 2026 09:15:00 +0000

Type	Values Removed	Values Added
Title		Modem Firmware Improper Input Validation Leading to Remote Information Disclosure

Wed, 01 Jul 2026 03:30:00 +0000

Type	Values Removed	Values Added
Description		In Modem, there is a possible information disclosure due to improper input validation. This could lead to remote information disclosure, 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: MOLY01811421; Issue ID: MSV-6788.
Weaknesses		CWE-288
References		https://corp.mediatek.com/product-security-bulletin/July-2026

Subscriptions

Mediatek, Inc. Mediatek Chipset

MITRE

Status: PUBLISHED

Assigner: MediaTek

Published: 2026-07-01T03:14:02.293Z

Updated: 2026-07-01T10:39:34.250Z

Reserved: 2025-11-03T01:30:59.014Z

Link: CVE-2026-20460

Vulnrichment

Updated: 2026-07-01T10:37:12.253Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-07T09:30:04Z

Weaknesses

CWE-288

Tracking

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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