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    CVE-2026-20477

    In display, 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: ALPS11009963; Issue ID: MSV-7658.

    Published:Aug 3, 2026
    Last Modified:Aug 19, 2026
    EPS:Aug 3, 2026
    EPSS Score:0.00121
    CVSS Score:6

    Affected Products

    Vendor
    Mediatek
    Product
    Mt6991
    Vendor
    Mediatek
    Product
    Mt6991 Firmware
    Vendor
    Mediatek
    Product
    Mt6993
    Vendor
    Mediatek
    Product
    Mt6993 Firmware
    Vendor
    Mediatek
    Product
    Mt8188
    Vendor
    Mediatek
    Product
    Mt8188 Firmware
    Vendor
    Mediatek
    Product
    Mt8189
    Vendor
    Mediatek
    Product
    Mt8189 Firmware
    Vendor
    Mediatek
    Product
    Mt8668
    Vendor
    Mediatek
    Product
    Mt8668 Firmware
    Vendor
    Mediatek
    Product
    Mt8676
    Vendor
    Mediatek
    Product
    Mt8676 Firmware
    Vendor
    Mediatek
    Product
    Mt8678
    Vendor
    Mediatek
    Product
    Mt8678 Firmware
    Vendor
    Mediatek
    Product
    Mt8781
    Vendor
    Mediatek
    Product
    Mt8781 Firmware
    Vendor
    Mediatek
    Product
    Mt8799
    Vendor
    Mediatek
    Product
    Mt8799 Firmware
    Vendor
    Mediatek
    Product
    Mt8910
    Vendor
    Mediatek
    Product
    Mt8910 Firmware
    Vendor
    Mediatek, Inc.
    Product
    Mediatek Chipset

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High