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    CVE-2026-20419

    In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461663 / WCNCR00463309; Issue ID: MSV-4852.

    Published:Feb 2, 2026
    Last Modified:Apr 16, 2026
    EPS:Feb 2, 2026
    EPSS Score:0.00014
    CVSS Score:6.5

    Affected Products

    Vendor
    Mediatek
    Product
    Mt6890
    Vendor
    Mediatek
    Product
    Mt6989tb
    Vendor
    Mediatek
    Product
    Mt7902
    Vendor
    Mediatek
    Product
    Mt7915
    Vendor
    Mediatek
    Product
    Mt7916
    Vendor
    Mediatek
    Product
    Mt7920
    Vendor
    Mediatek
    Product
    Mt7921
    Vendor
    Mediatek
    Product
    Mt7922
    Vendor
    Mediatek
    Product
    Mt7925
    Vendor
    Mediatek
    Product
    Mt7927
    Vendor
    Mediatek
    Product
    Mt7981
    Vendor
    Mediatek
    Product
    Mt7986
    Vendor
    Mediatek
    Product
    Mt8196
    Vendor
    Mediatek
    Product
    Mt8668
    Vendor
    Mediatek
    Product
    Mt8676
    Vendor
    Mediatek
    Product
    Mt8678
    Vendor
    Mediatek
    Product
    Mt8775
    Vendor
    Mediatek
    Product
    Mt8791t
    Vendor
    Mediatek
    Product
    Mt8792
    Vendor
    Mediatek
    Product
    Mt8793
    Vendor
    Mediatek
    Product
    Mt8796
    Vendor
    Mediatek
    Product
    Mt8873
    Vendor
    Mediatek
    Product
    Mt8883
    Vendor
    Mediatek
    Product
    Mt8893
    Vendor
    Mediatek
    Product
    Mt8910
    Vendor
    Mediatek
    Product
    Nbiot Sdk
    Vendor
    Mediatek
    Product
    Software Development Kit
    Vendor
    Openwrt
    Product
    Openwrt

    Exploits

    No exploit reference

    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