CVE-2026-3301

Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection

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.

Affected

Totolink · N300RH

CVSS v4.0 VULDB

8.9 HIGHCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULDB

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 VULDB

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

4.61% chance of exploitation in the next 30 days, 92nd percentile

Published

2026-02-27

Proof-of-concept exploits (1)

• xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md7★ · 2026-05-01

Security advisories

• https://vuldb.com/?id.348052
• https://vuldb.com/?submit.761297
• https://www.totolink.net

References

• CVE Record
• NVD entry

Related

• CVE-2025-15356
• CVE-2025-15357
• CVE-2025-57105
• CVE-2025-9769
• CVE-2026-0640
• CVE-2026-1420