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.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0018.

Exploitation none

Automatable no

Technical Impact partial

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
MT2737 affected —
MT6813 affected —
MT6835 affected —
MT6858 affected —
MT6878 affected —
MT6879 affected —
MT6886 affected —
MT6895 affected —
MT6896 affected —
MT6897 affected —
MT6899 affected —
MT6980 affected —
MT6983 affected —
MT6985 affected —
MT6988 affected —
MT6989 affected —
MT6990 affected —
MT6991 affected —
MT6993 affected —
MT8673 affected —
MT8676 affected —
MT8678 affected —
MT8755 affected —
MT8775 affected —
MT8792 affected —
MT8793 affected —
MT8795T affected —
MT8796 affected —
MT8798 affected —
MT8863 affected —
MT8873 affected —
MT8883 affected —
MT8893 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Mediatek, Inc. Subscribe
Mediatek Chipset Subscribe

Project Subscriptions

Vendors Products
Mediatek, Inc. Subscribe
Mediatek Chipset Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://corp.mediatek.com/product-security-bulletin/July-2026 cve-icon
History

Thu, 02 Jul 2026 11:00:00 +0000

Type Values Removed Values Added
Title Modem Firmware Out‑of‑Bounds Write Causing Remote Denial of Service

Thu, 02 Jul 2026 04:15:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial of Service

Wed, 01 Jul 2026 23:45:00 +0000

Type Values Removed Values Added
Title Modem Out‑of‑Bounds Write Allowing Remote Denial of Service

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

Type Values Removed Values Added
Title Out Of Bounds Write in MediaTek Modem Leading to Remote Denial Of Service

Wed, 01 Jul 2026 13:45:00 +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:N/I:N/A:H'}

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 Out Of Bounds Write in MediaTek Modem Leading to Remote Denial Of Service

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

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published:

Updated: 2026-07-01T10:39:51.662Z

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

Link: CVE-2026-20461

cve-icon Vulnrichment

Updated: 2026-07-01T10:34:38.735Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-02T10:45:03Z

Weaknesses