Totolink · A8000Ru · CVE-2026-7152
**Name of the Vulnerable Software and Affected Versions**
Totolink A8000RU version 7.1cu.643 b20200521
**Description**
Remote OS command injection is possible via the CGI Handler component. The issue exists in the `setTelnetCfg()` function within the '/cgi-bin/cstecgi.cgi' endpoint. By manipulating the `telnet enabled` argument, an attacker can execute arbitrary operating system commands remotely.
**Recommendations**
For version 7.1cu.643 b20200521, update the software to a patched version.
As a temporary workaround, restrict access to the '/cgi-bin/cstecgi.cgi' endpoint or disable the `setTelnetCfg()` function.