CVE-2026-20456

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Summary

CVECVE-2026-20456
StatePUBLISHED
AssignerMediaTek
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-01 04:16:22 UTC
Updated2026-06-01 17:54:59 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000140000 probability, percentile 0.025210000 (date 2026-06-02)

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Mediatek Mt7902 - All All All
Operating System Mediatek Mt7902 Firmware - All All All
Hardware Mediatek Mt7920 - All All All
Operating System Mediatek Mt7920 Firmware - All All All
Hardware Mediatek Mt7921 - All All All
Operating System Mediatek Mt7921 Firmware - All All All
Hardware Mediatek Mt7922 - All All All
Operating System Mediatek Mt7922 Firmware - All All All
Hardware Mediatek Mt7925 - All All All
Operating System Mediatek Mt7925 Firmware - All All All
Hardware Mediatek Mt7927 - All All All
Operating System Mediatek Mt7927 Firmware - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA MediaTek Inc. MediaTek Chipset affected MT7902 Not specified
CNA MediaTek Inc. MediaTek Chipset affected MT7920 Not specified
CNA MediaTek Inc. MediaTek Chipset affected MT7921 Not specified
CNA MediaTek Inc. MediaTek Chipset affected MT7922 Not specified
CNA MediaTek Inc. MediaTek Chipset affected MT7925 Not specified
CNA MediaTek Inc. MediaTek Chipset affected MT7927 Not specified

References

ReferenceSourceLinkTags
corp.mediatek.com/product-security-bulletin/June-2026 [email protected] corp.mediatek.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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