CVE-2026-20446

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Summary

CVECVE-2026-20446
StatePUBLISHED
AssignerMediaTek
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-07 04:17:13 UTC
Updated2026-04-07 15:43:45 UTC
DescriptionIn sec boot, there is a possible out of bounds write due to an integer overflow. This could lead to local denial of service, if an attacker has physical access to the device, with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09963054; Issue ID: MSV-3899.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.000230000 probability, percentile 0.060930000 (date 2026-04-07)

Problem Types: CWE-787 | CWE-190 | CWE-787 CWE-787 Out-of-bounds Write | CWE-190 CWE-190 Integer Overflow or Wraparound

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED4.3MEDIUMCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary4.3MEDIUMCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Mediatek Mt6813 - All All All
Operating System Mediatek Mt6813 Firmware - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA MediaTek Inc. MediaTek Chipset affected MT6813 Not specified

References

ReferenceSourceLinkTags
corp.mediatek.com/product-security-bulletin/April-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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