RCE in Totolink A7100ru
CVE-2026-5975
A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. The impacted element is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wanIdx leads to os command injection. The attack may be performed from remote. The exploit is publicly available and might be used.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.018 (76.3th percentile) — read the EPSS interpretation.
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.
Affected products
- Totolink A7100ru — versions 7.4cu.2313_b20191024
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (exploit)
- cna@vuldb.com (product)
Frequently asked questions
- What is CVE-2026-5975?
- CVE-2026-5975 is a critical-severity vulnerability in Totolink A7100ru, classified under Command Injection. CVSS score: 9.8/10. Published 2026-04-09.
- How severe is CVE-2026-5975?
- Critical severity. CVSS v3 base score is 9.8 out of 10.