Vulnerability · Published Apr 10, 2026 · Assigned by VulDB
CVE-2026-5993Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection
Critical 9.8
In plain English
A critical-severity OS command injection in A7100RU from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.8%top 21.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
Weakness: CWE-78, CWE-77 · Vector: 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
References
- VDB-356547 | Totolink A7100RU CGI cstecgi.cgi setWiFiGuestCfg os command injection vdb-entry, technical-description
- VDB-356547 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #792041 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection third-party-advisory
- https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_165/README.md exploit
- https://www.totolink.net/ product