Vulnerability · Published May 26, 2026 · Assigned by VulDB

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

Critical 9.8

In plain English

A critical-severity OS command injection in N300RH from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)2.1%top 17.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
Totolink	N300RH	6.1c.1353_B20190305

Weakness: CWE-78, CWE-77 · Vector: 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

References

VDB-365607 | Totolink N300RH Web Management cstecgi.cgi setPasswordCfg os command injection vdb-entry, technical-description
VDB-365607 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #815068 | Totolink N300RHv4 V6.1c.1353_B20190305 OS Command Injection third-party-advisory
https://github.com/A1ester/TOTOLINK-N300RH-Command-Injection exploit
https://www.totolink.net/ product