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    CVE-2026-4861

    A weakness has been identified in Wavlink WL-NU516U1 260227. This vulnerability affects the function ftext of the file /cgi-bin/nas.cgi. This manipulation of the argument Content-Length causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

    Published:Mar 26, 2026
    Last Modified:Apr 30, 2026
    EPS:Mar 26, 2026
    EPSS Score:0.00053
    CVSS Score:8.8

    Affected Products

    Vendor
    Wavlink
    Product
    Wl-nu516u1
    Vendor
    Wavlink
    Product
    Wl-nu516u1 Firmware

    Exploits

    https://github.com/Wlz1112/WAVLINK-NU516U1-V260227/blob/main/Content-Length.mdhttps://github.com/HORKimhab/CVE-2026-4861

    Related CVEs

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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