CVE-2025-8938 Details
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.
A backdoor vulnerability has been identified in the TOTOLINK N350R router, specifically in version 1.2.3-B20130826. The issue arises in the Telnet service, within the 'formSysTel' function of the '/boafrm/formSysTel' file. The vulnerability is triggered by manipulating the 'TelEnabled' parameter, allowing remote access through a backdoor. This vulnerability has been publicly disclosed and is actively exploitable.
It is recommended to apply restrictive firewall rules to block unauthorized access to the Telnet service.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 15, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/rew1X/CVE/blob/main/TOTOLINK/formSysTel/formSysTel.md | [email protected] | Broken Link |
| https://github.com/rew1X/CVE/blob/main/TOTOLINK/formSysTel/formSysTel.md#poc | [email protected] | Broken Link |
| https://vuldb.com/?ctiid.319901 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.319901 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.631837 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.totolink.net/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-912 | Hidden Functionality | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| totolink n350r firmware | 1.2.3-b20130826 |
CPE
Remediation
| |
| totolink n350r | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Oct 3, 2025 | Initial Analysis | [email protected] |
| Aug 14, 2025 | New CVE Received | [email protected] |