What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-10 · updated 2026-10-26
• Weakness: CWE-77

Description

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.

Affected products

• Totolink A7100RU: 7.4cu.2313_b20191024

References

• https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md
• https://vuldb.com/submit/792041
• https://vuldb.com/vuln/356547
• https://vuldb.com/vuln/356547/cti
• https://www.totolink.net/

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