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    CVE-2026-1686

    A security flaw has been discovered in Totolink A3600R 5.9c.4959. This issue affects the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. Performing a manipulation of the argument apcliSsid results in buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

    Published:Jan 30, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 30, 2026
    EPSS Score:0.00171
    CVSS Score:8.8

    Affected Products

    Vendor
    Totolink
    Product
    A3600r
    Vendor
    Totolink
    Product
    A3600r Firmware

    Exploits

    https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.mdhttps://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/4959-apcliSsid-setAppEasyWizardConfig.md#poc

    Related CVEs

    CVE-2026-31027 (CVSS 9.8) — TOTOlink A3600R v5.9c.4959 contains a buffer overflow vulnerability in the setAppEasyWizardConfig interface of…
    CVE-2026-5020 (CVSS 2.1) — A vulnerability was detected in Totolink A3600R 4.1.2cu.5182_B20201102. Affected by this issue is the function…
    CVE-2024-7187 (CVSS 8.7) — A vulnerability was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. It has been declared as critical. This vu…
    CVE-2024-7186 (CVSS 8.7) — A vulnerability was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. It has been classified as critical. This …
    CVE-2024-7185 (CVSS 8.7) — A vulnerability was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102 and classified as critical. Affected by th…
    CVE-2024-7184 (CVSS 8.7) — A vulnerability has been found in TOTOLINK A3600R 4.1.2cu.5182_B20201102 and classified as critical. Affected …
    CVE-2024-7183 (CVSS 8.7) — A vulnerability, which was classified as critical, was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. Affect…
    CVE-2024-7182 (CVSS 8.7) — A vulnerability, which was classified as critical, has been found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. T…
    CVE-2024-7181 (CVSS 5.3) — A vulnerability classified as critical was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. This vulnerability…
    CVE-2024-7180 (CVSS 8.7) — A vulnerability classified as critical has been found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. This affects …

    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