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    CVE-2026-20490

    In ccci, there is a possible out of bounds read due to a missing bounds check. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10981501; Issue ID: MSV-7669.

    Published:Aug 3, 2026
    Last Modified:Aug 19, 2026
    EPS:Aug 3, 2026
    EPSS Score:0.001
    CVSS Score:4.4

    Affected Products

    Vendor
    Mediatek
    Product
    Mt6813
    Vendor
    Mediatek
    Product
    Mt6813 Firmware
    Vendor
    Mediatek
    Product
    Mt6982vb
    Vendor
    Mediatek
    Product
    Mt6982vb Firmware
    Vendor
    Mediatek
    Product
    Mt6986
    Vendor
    Mediatek
    Product
    Mt6986 Firmware
    Vendor
    Mediatek
    Product
    Mt6986d
    Vendor
    Mediatek
    Product
    Mt6986d Firmware
    Vendor
    Mediatek
    Product
    Mt6988
    Vendor
    Mediatek
    Product
    Mt6988 Firmware
    Vendor
    Mediatek, Inc.
    Product
    Mediatek Chipset

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2026-20449 (CVSS 6.5) — In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of …
    CVE-2026-20446 (CVSS 4.3) — In sec boot, there is a possible out of bounds write due to an integer overflow. This could lead to local deni…
    CVE-2026-20433 (CVSS 8.8) — In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote esc…
    CVE-2026-20432 (CVSS 8) — In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote esc…
    CVE-2026-20431 (CVSS 6.5) — In Modem, there is a possible system crash due to a logic error. This could lead to remote denial of service, …
    CVE-2026-20435 (CVSS 4.6) — In preloader, there is a possible read of device unique identifiers due to a logic error. This could lead to l…
    CVE-2026-20406 (CVSS 6.5) — In Modem, there is a possible system crash due to an uncaught exception. This could lead to remote denial of s…
    CVE-2026-20405 (CVSS 6.5) — In Modem, there is a possible system crash due to a missing bounds check. This could lead to remote denial of …

    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