CVE-2026-20440

In MAE, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10431968; Issue ID: MSV-5824.

CVSS v3 6.7 MEDIUM

6.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://corp.mediatek.com/product-security-bulletin/March-2026	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*

OR	cpe:2.3:h:mediatek:mt2718:-:::::::*
	cpe:2.3:h:mediatek:mt6899:-:::::::*
	cpe:2.3:h:mediatek:mt6991:-:::::::*
	cpe:2.3:h:mediatek:mt8678:-:::::::*
	cpe:2.3:h:mediatek:mt8793:-:::::::*

History

No history.

Information

Published : 2026-03-02 09:16

Updated : 2026-03-03 13:03

NVD link : CVE-2026-20440

Mitre link : CVE-2026-20440

CVE.ORG link : CVE-2026-20440

JSON object : View

Products Affected

mediatek

mt2718
mt6899
mt8793
mt6991
mt8678

google

android

CWE

CWE-1285

Improper Validation of Specified Index, Position, or Offset in Input

CWE-787

Out-of-bounds Write

{"id": "CVE-2026-20440", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.8}]}, "published": "2026-03-02T09:16:17.307", "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/March-2026", "tags": ["Vendor Advisory"], "source": "security@mediatek.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@mediatek.com", "description": [{"lang": "en", "value": "CWE-1285"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "In MAE, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10431968; Issue ID: MSV-5824."}, {"lang": "es", "value": "En MAE, existe una posible escritura fuera de l\u00edmites debido a una falta de verificaci\u00f3n de l\u00edmites. Esto podr\u00eda conducir a una escalada local de privilegios si un actor malicioso ya ha obtenido el privilegio de Sistema. No se necesita interacci\u00f3n del usuario para la explotaci\u00f3n. ID de parche: ALPS10431968; ID de problema: MSV-5824."}], "lastModified": "2026-03-03T13:03:52.427", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8538774C-906D-4B03-A3E7-FA7A55E0DA9E"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:mediatek:mt2718:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F5506327-7DDF-4E88-9EA8-10B8E32F848B"}, {"criteria": "cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "C6E9F80F-9AC9-41E0-BB14-9DB6F14B62CD"}, {"criteria": "cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "CBBB30DF-E963-4940-B742-F6801F68C3FC"}, {"criteria": "cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "152A5F3D-8004-4649-BDB1-E6F0798AF1CB"}, {"criteria": "cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2FBD3487-F8CE-406C-8BD7-DD57FF8CD60B"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "security@mediatek.com"}