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    CVE-2026-5004

    A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub_4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

    Published:Mar 28, 2026
    Last Modified:Apr 3, 2026
    EPS:Mar 28, 2026
    EPSS Score:0.00079
    CVSS Score:8.8

    Affected Products

    Vendor
    Wavlink
    Product
    Wl-wn579x3-c
    Vendor
    Wavlink
    Product
    Wl-wn579x3-c Firmware

    Exploits

    https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_200/README.md

    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