RCE in Totolink A7100ru
CVE-2026-5688
A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Impacted is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument provider leads to os command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.014 (69.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
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-2026-5688?
- CVE-2026-5688 is a high-severity vulnerability in Totolink A7100ru, classified under Command Injection. CVSS score: 7.3/10. Published 2026-04-06.
- How severe is CVE-2026-5688?
- High severity. CVSS v3 base score is 7.3 out of 10.