CVE-2026-3301Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)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
- Weakness (CWE)
- CWE-78, CWE-77
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Feb 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Totolink N300RH totolink:n300rh_firmware | 6.1c.1353_B20190305 | CNA record |
totolink n300rh_firmware totolink:n300rh_firmware | 6.1c.1349_b20181018; 6.1c.1353_b20190305 | NVD |
References
- https://vuldb.com/?id.348052vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.348052signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.761297third-party-advisory, vdb-entry
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.mdexploit, third-party-advisory
- https://www.totolink.net/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.