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    CVE-2026-3613

    A vulnerability was identified in Wavlink WL-NU516U1 V240425. This vulnerability affects the function sub_401A0C of the file /cgi-bin/login.cgi. Such manipulation of the argument ipaddr leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

    Published:Mar 6, 2026
    Last Modified:Apr 17, 2026
    EPS:Mar 6, 2026
    EPSS Score:0.00139
    CVSS Score:7.2

    Affected Products

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

    Exploits

    https://github.com/Wlz1112/WAVLINK-NU516-V240425/blob/main/ipaddr_Stack%20Buffer%20Overflow.md

    Related CVEs

    CVE-2026-18590 (CVSS 2.1) — A vulnerability was determined in Wavlink WL-NU516U1 708c073-mt7628. Affected is the function set_sys_adm of t…
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    CVE-2026-18588 (CVSS 9.3) — A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the fi…
    CVE-2026-18587 (CVSS 6.8) — A flaw has been found in Wavlink WL-NU516U1 708c073-mt7628. The impacted element is an unknown function of the…
    CVE-2026-15513 (CVSS 2.1) — A security flaw has been discovered in Wavlink WL-NU516U1 260515. This affects the function wlink_uci_set_valu…
    CVE-2026-13538 (CVSS 2.1) — A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub…
    CVE-2026-8230 (CVSS 2.1) — A flaw has been found in Wavlink NU516U1 240425. The impacted element is the function sys_login1 of the file /…
    CVE-2026-8229 (CVSS 2.1) — A vulnerability was detected in Wavlink NU516U1 240425. The affected element is the function WifiBasic of the …
    CVE-2026-8228 (CVSS 2.1) — A security vulnerability has been detected in Wavlink NU516U1 240425. Impacted is the function advance of the …
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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