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    CVE-2026-82539

    A vulnerability was determined in TOTOLINK A720R 4.1.5cu.630_B20250509. This impacts the function setMacFilterRules of the file cstecgi.cgi of the component MAC Filtering. Executing a manipulation of the argument desc can lead to memory corruption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

    Published:Aug 30, 2026
    Last Modified:Sep 1, 2026
    EPS:Aug 30, 2026
    EPSS Score:0.00599
    CVSS Score:9.1

    Affected Products

    Vendor
    Totolink
    Product
    A720r
    Vendor
    Totolink
    Product
    A720r Firmware

    Exploits

    https://github.com/Xernary/CVE-2026-82539

    Related CVEs

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    CVE-2025-60683 (CVSS 6.5) — A command injection vulnerability exists in the ToToLink A720R Router firmware V4.1.5cu.614_B20230630 within t…
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    CVE-2025-9303 (CVSS 7.4) — A security flaw has been discovered in TOTOLINK A720R 4.1.5cu.630_B20250509. This issue affects the function s…
    CVE-2025-4271 (CVSS 6.9) — A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been declared as problematic. Affected by this…
    CVE-2025-4270 (CVSS 6.9) — A vulnerability was found in TOTOLINK A720R 4.1.5cu.374. It has been classified as problematic. Affected is an…
    CVE-2025-4269 (CVSS 6.9) — A vulnerability was found in TOTOLINK A720R 4.1.5cu.374 and classified as critical. This issue affects some un…
    CVE-2025-4268 (CVSS 6.9) — A vulnerability has been found in TOTOLINK A720R 4.1.5cu.374 and classified as critical. This vulnerability af…
    CVE-2024-8869 (CVSS 2.3) — A vulnerability classified as critical has been found in TOTOLINK A720R 4.1.5. Affected is the function export…

    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