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.

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…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.012 (78.9th 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

VDB-355515 | Totolink A7100RU cstecgi.cgi setDdnsCfg os command injection (technical-description, vdb-entry)
VDB-355515 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Submit #792945 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection (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.