CVE-2025-8938 – TOTOLINK N350R Telnet Service Remote Backdoor Vulnerability

The following table lists the changes that have been made to the
CVE-2025-8938 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. 14, 2025

    Action Type Old Value New Value
    Added Description A vulnerability was found in TOTOLINK N350R 1.2.3-B20130826. This issue affects the function formSysTel of the file /boafrm/formSysTel of the component Telnet Service. The manipulation of the argument TelEnabled leads to backdoor. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
    Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Added CWE CWE-912
    Added Reference https://github.com/rew1X/CVE/blob/main/TOTOLINK/formSysTel/formSysTel.md
    Added Reference https://github.com/rew1X/CVE/blob/main/TOTOLINK/formSysTel/formSysTel.md#poc
    Added Reference https://vuldb.com/?ctiid.319901
    Added Reference https://vuldb.com/?id.319901
    Added Reference https://vuldb.com/?submit.631837
    Added Reference https://www.totolink.net/
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