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CVE-2026-3301

Published: Feb 27, 2026

Modified: Feb 27, 2026

PUBLISHED

CVSS v3.1

9.8

CRITICAL

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.

Vendor	Product	Versions
Totolink	N300RH	affected `6.1c.1353_B20190305`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

VDB-348052 | Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection

vdb-entry

technical-description

VDB-348052 | CTI Indicators (IOB, IOC, TTP, IOA)

signature

permissions-required

Submit #761297 | TOTOLINK N300RH_V4 V6.1c.1353_B20190305 Command Injection

third-party-advisory

https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md

exploit

https://www.totolink.net/

product

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