In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

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 total

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
MT7902 affected —
MT7920 affected —
MT7921 affected —
MT7922 affected —
MT7925 affected —
MT7927 affected —

No data.

No data.

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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/June-2026 cve-icon cve-icon
History

Mon, 01 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

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

Mon, 01 Jun 2026 05:45:00 +0000

Type Values Removed Values Added
Title Missing Bounds Check in MediaTek WLAN Driver Leads to Local Denial of Service
First Time appeared Mediatek, Inc.
Mediatek, Inc. mediatek Chipset
Vendors & Products Mediatek, Inc.
Mediatek, Inc. mediatek Chipset

Mon, 01 Jun 2026 04:00:00 +0000

Type Values Removed Values Added
Description In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.
Weaknesses CWE-787
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: MediaTek

Published:

Updated: 2026-06-01T11:07:30.955Z

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

Link: CVE-2026-20456

cve-icon Vulnrichment

Updated: 2026-06-01T11:07:04.454Z

cve-icon NVD

Status : Received

Published: 2026-06-01T04:16:22.283

Modified: 2026-06-01T04:16:22.283

Link: CVE-2026-20456

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-01T05:30:20Z

Weaknesses