CVE-2026-20455_CVE-2026-20455

7.8 / 10

HIGH

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

Description

In geniezone, 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: ALPS10873936; Issue ID: MSV-6784.

Basic Information

ID CVE-2026-20455

Source MediaTek

Published Jun 1, 2026 at 03:20

Modified Jun 1, 2026 at 11:06

Affected Product

Vendor MediaTek, Inc.

Product MediaTek chipset

Version MT6739

Affected Versions MediaTek, Inc. MediaTek chipset MT6739
MediaTek, Inc. MediaTek chipset MT6761
MediaTek, Inc. MediaTek chipset MT6765
MediaTek, Inc. MediaTek chipset MT6768
MediaTek, Inc. MediaTek chipset MT6781
MediaTek, Inc. MediaTek chipset MT6789
MediaTek, Inc. MediaTek chipset MT6835
MediaTek, Inc. MediaTek chipset MT6853
MediaTek, Inc. MediaTek chipset MT6855
MediaTek, Inc. MediaTek chipset MT6877
MediaTek, Inc. MediaTek chipset MT6878
MediaTek, Inc. MediaTek chipset MT6879
MediaTek, Inc. MediaTek chipset MT6883
MediaTek, Inc. MediaTek chipset MT6885
MediaTek, Inc. MediaTek chipset MT6886
MediaTek, Inc. MediaTek chipset MT6889
MediaTek, Inc. MediaTek chipset MT6893
MediaTek, Inc. MediaTek chipset MT6895
MediaTek, Inc. MediaTek chipset MT6897
MediaTek, Inc. MediaTek chipset MT6899
MediaTek, Inc. MediaTek chipset MT6983
MediaTek, Inc. MediaTek chipset MT6985
MediaTek, Inc. MediaTek chipset MT6989
MediaTek, Inc. MediaTek chipset MT6991
MediaTek, Inc. MediaTek chipset MT8673
MediaTek, Inc. MediaTek chipset MT8765
MediaTek, Inc. MediaTek chipset MT8766
MediaTek, Inc. MediaTek chipset MT8768
MediaTek, Inc. MediaTek chipset MT8781
MediaTek, Inc. MediaTek chipset MT8786
MediaTek, Inc. MediaTek chipset MT8788
MediaTek, Inc. MediaTek chipset MT8791T
MediaTek, Inc. MediaTek chipset MT8793
MediaTek, Inc. MediaTek chipset MT8797
MediaTek, Inc. MediaTek chipset MT8798
MediaTek, Inc. MediaTek chipset MT8910

CWE Classification

CWE-787

References

corp.mediatek.com /product-security-bulletin/June-2026

{
    "lastseen": "",
    "description": "In geniezone, 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: ALPS10873936; Issue ID: MSV-6784.",
    "published": "2026-06-01T03:20:12.838Z",
    "modified": "2026-06-01T11:06:36.293Z",
    "type": "cve",
    "title": "CVE-2026-20455",
    "source": "MediaTek",
    "references": "https://corp.mediatek.com/product-security-bulletin/June-2026",
    "id": "CVE-2026-20455",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "MediaTek, Inc. MediaTek chipset MT6739\nMediaTek, Inc. MediaTek chipset MT6761\nMediaTek, Inc. MediaTek chipset MT6765\nMediaTek, Inc. MediaTek chipset MT6768\nMediaTek, Inc. MediaTek chipset MT6781\nMediaTek, Inc. MediaTek chipset MT6789\nMediaTek, Inc. MediaTek chipset MT6835\nMediaTek, Inc. MediaTek chipset MT6853\nMediaTek, Inc. MediaTek chipset MT6855\nMediaTek, Inc. MediaTek chipset MT6877\nMediaTek, Inc. MediaTek chipset MT6878\nMediaTek, Inc. MediaTek chipset MT6879\nMediaTek, Inc. MediaTek chipset MT6883\nMediaTek, Inc. MediaTek chipset MT6885\nMediaTek, Inc. MediaTek chipset MT6886\nMediaTek, Inc. MediaTek chipset MT6889\nMediaTek, Inc. MediaTek chipset MT6893\nMediaTek, Inc. MediaTek chipset MT6895\nMediaTek, Inc. MediaTek chipset MT6897\nMediaTek, Inc. MediaTek chipset MT6899\nMediaTek, Inc. MediaTek chipset MT6983\nMediaTek, Inc. MediaTek chipset MT6985\nMediaTek, Inc. MediaTek chipset MT6989\nMediaTek, Inc. MediaTek chipset MT6991\nMediaTek, Inc. MediaTek chipset MT8673\nMediaTek, Inc. MediaTek chipset MT8765\nMediaTek, Inc. MediaTek chipset MT8766\nMediaTek, Inc. MediaTek chipset MT8768\nMediaTek, Inc. MediaTek chipset MT8781\nMediaTek, Inc. MediaTek chipset MT8786\nMediaTek, Inc. MediaTek chipset MT8788\nMediaTek, Inc. MediaTek chipset MT8791T\nMediaTek, Inc. MediaTek chipset MT8793\nMediaTek, Inc. MediaTek chipset MT8797\nMediaTek, Inc. MediaTek chipset MT8798\nMediaTek, Inc. MediaTek chipset MT8910",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "MediaTek chipset",
    "version": "MT6739",
    "vendor": "MediaTek, Inc.",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}