CVE-2025-9091 – Tenda AC20 Hard-Coded Credentials Vulnerability

The following table lists the changes that have been made to the
CVE-2025-9091 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Aug. 17, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V4.0 AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
    Added CVSS V2 (AV:L/AC:H/Au:S/C:P/I:N/A:N)
    Added CWE CWE-798
    Added CWE CWE-259
    Added Reference https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#description
    Added Reference https://github.com/ZZ2266/.github.io/tree/main/AC20/hardcoded%20password/readme.md
    Added Reference https://vuldb.com/?ctiid.320359
    Added Reference https://vuldb.com/?id.320359
    Added Reference https://vuldb.com/?submit.632268
    Added Reference https://www.tenda.com.cn/
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