CVE-2025-6916 Details
Description
A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015. This affects the function Form_Login of the file /formLoginAuth.htm. The manipulation of the argument authCode/goURL leads to missing authentication. The attack needs to be initiated within the local network. The exploit has been disclosed to the public and may be used.
A critical vulnerability exists in the TOTOLINK T6 router, specifically in version 4.1.5cu.748_B20211015. The issue arises in the Form_Login function of the file /formLoginAuth.htm, where the manipulation of the authCode and goURL parameters creates a missing authentication flaw. This vulnerability requires local network access to exploit.
It is recommended to implement restrictive firewall rules to block unauthorized access to the router.
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 Jun 30, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/c0nyy/IoT_vuln/blob/main/TOTOLINK%20T6%20Vuln.md | CISA-ADP | ExploitThird Party Advisory |
| https://github.com/c0nyy/IoT_vuln/blob/main/TOTOLINK%20T6%20Vuln.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.314409 | [email protected] | Permissions RequiredThird Party AdvisoryVDB Entry |
| https://vuldb.com/?id.314409 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.605101 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.totolink.net/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| totolink t6 firmware | v4.1.5cu.748_b20211015 |
CPE
Remediation
| |
| totolink t6 | All versions |
CPE
Remediation
| |
Change History
6 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] |
| Jul 7, 2025 | Initial Analysis | [email protected] |
| Jun 30, 2025 | CVE Modified | CISA-ADP |
| Jun 30, 2025 | New CVE Received | [email protected] |