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Vulnerabilities

Vulnerability · CVE-2026-3301

A security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305.

Published Feb 27, 2026 · catalog updated Jun 17, 2026 · n300rh firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-3301. EPSS is 4.61%. Act only if a listed version of n300rh firmware is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.61%
Remediation
Advisory link
Affected products
cpe totolink/n300rh firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe totolink/n300rh firmware6.1c.1349_b20181018
  • cpe totolink/n300rh firmware6.1c.1353_b20190305

How to fix CVE-2026-3301

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-3301. EPSS is 4.61%. Act only if a listed version of n300rh firmware is installed.

Which versions are affected?

Compare what you have installed with totolink/n300rh firmware 6.1c.1349_b20181018; totolink/n300rh firmware 6.1c.1353_b20190305. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-77: Command Injection; CWE-78: OS Command Injection. EPSS 4.61%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 27, 2026 · NIST NVD

    Detected

    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

  2. Jun 17, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-3301

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-3301

    30-day exploitation probability 4.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-3301

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.