CVE-2026-3301

CRITICAL 9.8

Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	n300rh
Published	Feb 27, 2026
Last Updated	Feb 27, 2026

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CVSS v3 Breakdown

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

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Totolink / N300RH

6.1c.1353_B20190305

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.348052 vuldb.com: https://vuldb.com/?ctiid.348052 vuldb.com: https://vuldb.com/?submit.761297 github.com: https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md totolink.net: https://www.totolink.net/

Credits

🔍 xuanyu (VulDB User)