CVE-2026-3301 Details
Description
A security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305. Affected by this vulnerability is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument webWlanIdx results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
A pre-authentication OS command injection vulnerability has been identified in the Totolink N300RH router, specifically in the version 6.1c.1353_B20190305. The vulnerability resides in the web management interface, within the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi. This issue allows remote attackers to inject arbitrary shell commands that are executed with root privileges on the device, without requiring any form of authentication. The vulnerability could lead to a complete compromise of the router and potentially the network to which it is connected.
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 Feb 27, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.348052 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.348052 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.761297 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.totolink.net/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| totolink n300rh firmware | 6.1c.1349_b20181018 6.1c.1353_b20190305 |
CPE
Remediation
| |
| totolink n300rh | 4.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 27, 2026 | Initial Analysis | [email protected] |
| Feb 27, 2026 | New CVE Received | [email protected] |