CVE-2026-9543: Totolink N300RH Web Management cstecgi.cgi setPasswordCfg os command injection

Published May 26, 2026

Updated

A vulnerability has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument admpass leads to os command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.

Affected Software

1 affected component

TOTOLINK N300RH=6.1c.1353_B20190305

Event History

May 26, 2026

CVE Published

via MITRE·12:30 PM

Data Sourced

via MITRE·12:30 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·02:16 PM

DescriptionSeverityWeakness

Mar 25, 58386

Event

via FIRST·11:25 PM

Frequently Asked Questions

What is the severity of CVE-2026-9543?

The severity of CVE-2026-9543 is critical with a rating of 9.8.

How do I fix CVE-2026-9543?

To fix CVE-2026-9543, update the Totolink N300RH to the latest firmware version provided by the vendor.

What kind of attack is associated with CVE-2026-9543?

CVE-2026-9543 is associated with OS command injection attacks that can be executed remotely.

Which component is affected by CVE-2026-9543?

CVE-2026-9543 affects the Web Management Interface, specifically the function setPasswordCfg in the file /cgi-bin/cstecgi.cgi.

Is remote exploitation possible for CVE-2026-9543?

Yes, CVE-2026-9543 can be exploited remotely due to the nature of the vulnerability.

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