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    CVE-2021-47786

    Redragon Gaming Mouse driver contains a kernel-level vulnerability that allows attackers to trigger a denial of service by sending malformed IOCTL requests. Attackers can send a crafted 2000-byte buffer with specific byte patterns to the REDRAGON_MOUSE device to crash the kernel driver.

    Published:Jan 15, 2026
    Last Modified:Apr 7, 2026
    EPS:Jan 15, 2026
    EPSS Score:0.00014
    CVSS Score:7.5

    Affected Products

    Vendor
    Redragon
    Product
    Bm-4091
    Vendor
    Redragon
    Product
    Bm-4091 Firmware
    Vendor
    Redragon
    Product
    Gaming Mouse
    Vendor
    Redragon
    Product
    M602-ks
    Vendor
    Redragon
    Product
    M602-ks Firmware
    Vendor
    Redragon
    Product
    M602a-rgb
    Vendor
    Redragon
    Product
    M602a-rgb Firmware
    Vendor
    Redragon
    Product
    M602aw-rgb
    Vendor
    Redragon
    Product
    M602aw-rgb Firmware
    Vendor
    Redragon
    Product
    M617-lit
    Vendor
    Redragon
    Product
    M617-lit Firmware
    Vendor
    Redragon
    Product
    M712-rgb
    Vendor
    Redragon
    Product
    M712-rgb Firmware
    Vendor
    Redragon
    Product
    M721
    Vendor
    Redragon
    Product
    M721 Firmware
    Vendor
    Redragon
    Product
    M725-lit
    Vendor
    Redragon
    Product
    M725-lit Firmware
    Vendor
    Redragon
    Product
    M801p-rgb
    Vendor
    Redragon
    Product
    M801p-rgb Firmware
    Vendor
    Redragon
    Product
    M816-pro
    Vendor
    Redragon
    Product
    M816-pro Firmware
    Vendor
    Redragon
    Product
    M910-k
    Vendor
    Redragon
    Product
    M910-k Firmware
    Vendor
    Redragon
    Product
    M910-ks
    Vendor
    Redragon
    Product
    M910-ks Firmware
    Vendor
    Redragon
    Product
    M914w-rgb
    Vendor
    Redragon
    Product
    M914w-rgb Firmware
    Vendor
    Redragon
    Product
    M915rgb-wl
    Vendor
    Redragon
    Product
    M915rgb-wl Firmware

    Exploits

    https://github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/REDRAGON_MOUSEhttps://www.exploit-db.com/exploits/50322https://www.exploit-db.com/exploits/50322

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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