TI-2026-02851 Aliases CVE-2026-3301 GHSA-jppp-pmhm-3cp9

Totolink N300RH Web Management cstecgi.cgi setWebWlanIdx os command injection

HIGH 81CWE-77Published 2026-02-27 · Updated 2026-02-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.04439 91st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TOTOLINK	N300RH	6.1c.1353_B20190305	—	No fix listed	CNA

N300RH VendorTOTOLINK Affected 6.1c.1353_B20190305 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:n300rh_firmware:6.1c.1349_b20181018:::::::*	6.1c.1349_b20181018	Vulnerable	TOTOLINK
cpe:2.3:o:totolink:n300rh_firmware:6.1c.1353_b20190305:::::::*	6.1c.1353_b20190305	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:n300rh:4.0:::::::*	4.0	Running on	TOTOLINK

cpe:2.3:o:totolink:n300rh_firmware:6.1c.1349_b20181018:*:*:*:*:*:*:* Versions 6.1c.1349_b20181018 Vulnerable ·TOTOLINK
cpe:2.3:o:totolink:n300rh_firmware:6.1c.1353_b20190305:*:*:*:*:*:*:* Versions 6.1c.1353_b20190305 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:n300rh:4.0:*:*:*:*:*:*:* Versions 4.0 Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-3301
2026-10-03 Alias added: GHSA-jppp-pmhm-3cp9

References

Exploit 1

https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/N300RHv4/01_setWebWlanIdx_RCE/README.md

Other 1

https://www.totolink.net/

TI-2025-05801 TOTOLINK N300RH HTTP POST Message formPortFw buffer overflow CVSS 4.0HIGH 8.7
TI-2026-03188 Totolink N300RH CGI cstecgi.cgi setWiFiWpsConfig os command injection CVSS 4.0MEDIUM 6.9
TI-2025-05802 TOTOLINK N300RH HTTP POST Message formFilter denial of service CVSS 4.0MEDIUM 5.1
TI-2025-04346 TOTOLINK N300RH cstecgi.cgi setUploadUserData command injection CVSS 4.0MEDIUM 5.3
TI-2025-04345 TOTOLINK N300RH cstecgi.cgi setUnloadUserData command injection CVSS 4.0MEDIUM 5.3
TI-2025-04344 TOTOLINK N300RH cstecgi.cgi CloudACMunualUpdateUserdata command injection CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences