CVE-2026-3301CWE-77CWE-78

Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection

Critical · published February 27, 2026

CVSS v4.0
9.3
EPSS
5%
Percentile
91.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.04607 · 91.6th percentile
Weaknesses
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection'); CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-02-27T05:32Z
EPSS history
Timeline
  • 27 FEB 05:32Z
    Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection
    cvelistv5