RCE in Totolink N300rh
CVE-2026-9543
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (87.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.033 · change: +0.011
Affected products
- Totolink N300rh — versions 6.1c.1353_B20190305
Weakness classification (CWE)
References
- vuldb.com/vuln/365607 (technical-description, vdb-entry)
- vuldb.com/vuln/365607/cti (signature, permissions-required)
- vuldb.com/submit/815068 (third-party-advisory)
- github.com/A1ester/TOTOLINK-N300RH-Command-Injection (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-9543?
- CVE-2026-9543 is a critical-severity vulnerability in Totolink N300rh, classified under Command Injection. CVSS score: 9.8/10. Published 2026-05-26.
- How severe is CVE-2026-9543?
- Critical severity. CVSS v3 base score is 9.8 out of 10.