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    CVE-2025-9091

    A security flaw has been discovered in Tenda AC20 16.03.08.12. Affected by this vulnerability is an unknown functionality of the file /etc_ro/shadow. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

    Published:Aug 17, 2025
    Last Modified:Aug 21, 2025
    EPS:Aug 17, 2025
    EPSS Score:0.00014
    CVSS Score:2.5

    Affected Products

    Vendor
    Tenda
    Product
    Ac20
    Vendor
    Tenda
    Product
    Ac20 Firmware

    Exploits

    https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#descriptionhttps://github.com/ZZ2266/.github.io/tree/main/AC20/hardcoded%20password/readme.mdhttps://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.mdhttps://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#description

    Related CVEs

    CVE-2025-15356 (CVSS 7.4) — A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of…
    CVE-2025-14656 (CVSS 7.4) — A weakness has been identified in Tenda AC20 16.03.08.12. This affects the function httpd of the file /goform/…
    CVE-2025-14655 (CVSS 7.4) — A security flaw has been discovered in Tenda AC20 16.03.08.12. The impacted element is the function formSetReb…
    CVE-2025-14654 (CVSS 7.4) — A vulnerability was identified in Tenda AC20 16.03.08.12. The affected element is the function formSetPPTPUser…
    CVE-2025-13258 (CVSS 7.4) — A vulnerability was detected in Tenda AC20 up to 16.03.08.12. The impacted element is an unknown function of t…
    CVE-2025-11385 (CVSS 7.4) — A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The affected element is the function sscanf of…
    CVE-2025-10815 (CVSS 7.4) — A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this issue is the function strcpy …
    CVE-2025-10120 (CVSS 7.4) — A vulnerability was detected in Tenda AC20 up to 16.03.08.12. The impacted element is the function strcpy of t…
    CVE-2025-9791 (CVSS 7.4) — A weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file …
    CVE-2025-9090 (CVSS 2.1) — A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file …

    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