CVE-2026-3301
CRITICALTotolink N300RH 6.1c.1353_B20190305 - Command Injection
Title source: llmDescription
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.
References (5)
Core 5
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.348052
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.348052
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.761297
Third Party Advisory exploit
https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md
Various Sources product
https://www.totolink.net/
Scores
CVSS v3
9.8
EPSS
0.0094
EPSS Percentile
76.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-78
CWE-77
Status
published
Products (2)
totolink/n300rh_firmware
6.1c.1349_b20181018
totolink/n300rh_firmware
6.1c.1353_b20190305
Published
Feb 27, 2026
Tracked Since
Feb 27, 2026