In Modem, there is a possible permission bypass due to a permissions bypass. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: MOLY01880753; Issue ID: MSV-9866.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

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.

No EPSS score available.

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
MT2716 affected —
MT6813 affected —
MT6815 affected —
MT6835 affected —
MT6858 affected —
MT6878 affected —
MT6881 affected —
MT6897 affected —
MT6899 affected —
MT6982 affected —
MT6986 affected —
MT6988 affected —
MT6991 affected —
MT6993 affected —
MT8668 affected —
MT8676 affected —
MT8678 affected —
MT8755 affected —
MT8775 affected —
MT8792 affected —
MT8793 affected —
MT8863 affected —
MT8873 affected —
MT8875 affected —
MT8883 affected —

No data.

No data.

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Vendors Products
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Mediatek Chipset Subscribe
Mediatek, Inc. Subscribe
Mediatek Chipset Subscribe

Project Subscriptions

Vendors Products
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Mediatek Chipset Subscribe
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://www.mediatek.com/product-security-bulletin/November-2026 cve-icon cve-icon
History

Mon, 02 Nov 2026 19:00:00 +0000

Type Values Removed Values Added
Title MediaTek Modem Permission Bypass Allowing Local Denial of Service

Mon, 02 Nov 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

ssvc

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

Mon, 02 Nov 2026 11:30:00 +0000

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

Mon, 02 Nov 2026 04:00:00 +0000

Type Values Removed Values Added
Title MediaTek Modem Permission Bypass Allowing Local Denial of Service

Mon, 02 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
Description In Modem, there is a possible permission bypass due to a permissions bypass. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: MOLY01880753; Issue ID: MSV-9866.
Weaknesses CWE-280
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published:

Updated: 2026-11-02T16:45:37.422Z

Reserved: 2025-11-03T01:30:59.048Z

Link: CVE-2026-20577

cve-icon Vulnrichment

Updated: 2026-11-02T16:45:30.503Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-02T03:17:35.397

Modified: 2026-11-02T17:17:42.967

Link: CVE-2026-20577

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-02T18:45:13Z

Weaknesses