Critical 9.8Published Apr 9, 2026

CVE-2026-5993Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection

Updated under an hour ago (Oct 26, 2026, 1:50 PM ET)

Does this affect you?

It affects Totolink A7100RU. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Totolink A7100RU

Exploited in the last 30 days

A vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wifiOff leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used.

CVSS: 9.8 CRITICAL (v3.1, CNA)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
Weakness (CWE): CWE-78, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Apr 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Totolink A7100RU totolink:a7100ru_firmware	7.4cu.2313_b20191024	CNA record

References

References

https://vuldb.com/vuln/356547	vdb-entry, technical-description
https://vuldb.com/vuln/356547/cti	signature, permissions-required
https://vuldb.com/submit/792041	third-party-advisory
https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md	exploit
https://www.totolink.net/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.