Totolink · A8000Ru · CVE-2026-7242
**Name of the Vulnerable Software and Affected Versions**
Totolink A8000RU version 7.1cu.643 b20200521
**Description**
An OS command injection flaw exists in the CGI Handler component. The issue occurs because the `setOpenVpnClientCfg()` function in the '/cgi-bin/cstecgi.cgi' endpoint fails to adequately sanitize input from the `enabled` argument. This allows a remote, unauthenticated attacker to execute arbitrary operating system commands by sending a specially crafted HTTP request.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
As a temporary workaround, consider restricting access to the '/cgi-bin/cstecgi.cgi' endpoint or disabling the `setOpenVpnClientCfg()` function to minimize the risk of exploitation.