Vulnerability · Published Apr 9, 2026 · Assigned by VulDB
CVE-2026-5850Totolink A7100RU CGI cstecgi.cgi setVpnPassCfg 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 15.4% (higher than 97% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)15.4%top 3.2% 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 affects the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument pptpPassThru leads to os command injection. Remote exploitation of the attack is possible. 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-356376 | Totolink A7100RU CGI cstecgi.cgi setVpnPassCfg os command injection vdb-entry, technical-description
- VDB-356376 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #791266 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection third-party-advisory
- https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_156/README.md exploit
- https://www.totolink.net/ product