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    CVE-2026-4254

    A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c 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.

    Published:Mar 16, 2026
    Last Modified:Mar 24, 2026
    EPS:Mar 16, 2026
    EPSS Score:0.00154
    CVSS Score:9.8

    Affected Products

    Vendor
    Tenda
    Product
    Ac8
    Vendor
    Tenda
    Product
    Ac8 Firmware

    Exploits

    https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md

    Related CVEs

    CVE-2026-4253 (CVSS 2) — A security flaw has been discovered in Tenda AC8 16.03.50.11. This affects the function route_set_user_policy_…
    CVE-2026-4252 (CVSS 8.9) — A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 …
    CVE-2026-3044 (CVSS 7.4) — A vulnerability has been found in Tenda AC8 16.03.34.06. This affects the function webCgiGetUploadFile of the …
    CVE-2026-2203 (CVSS 7.4) — A flaw has been found in Tenda AC8 16.03.33.05. Affected by this vulnerability is an unknown functionality of …
    CVE-2026-2202 (CVSS 7.4) — A vulnerability was detected in Tenda AC8 16.03.33.05. Affected is the function fromSetWifiGusetBasic of the f…
    CVE-2025-12618 (CVSS 7.4) — A vulnerability has been found in Tenda AC8 16.03.34.06. This impacts an unknown function of the file /goform/…
    CVE-2025-61498 (CVSS 7.5) — A buffer overflow in the UPnP service of Tenda AC8 Hardware v03.03.10.01 allows attackers to cause a Denial of…
    CVE-2025-11120 (CVSS 7.4) — A weakness has been identified in Tenda AC8 16.03.34.06. The affected element is the function formSetServerCon…
    CVE-2025-55852 (CVSS 7.5) — Tenda AC8 v16.03.34.06 is vulnerable to Buffer Overflow in the formWifiBasicSet function via the parameter sec…
    CVE-2025-52054 (CVSS 5.3) — An issue was discovered in Tenda AC8 v4.0 AC1200 Dual-band Gigabit Wireless Router AC8v4.0 Firmware 16.03.33.0…

    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