Improper neutralization of CRLF sequences in IXON VPN Client before version 1.4.7 allows an attacker to execute commands as root or SYSTEM. Configuration values accepted by the local service are written to a file later consumed by a privileged subprocess, without line-ending sequences being neutralized, which allows additional directives to be introduced into that file. The configuration interface accepts changes without authenticating or verifying the origin of the requester. The injected configuration persists on disk across restarts of the client and the operating system, and the VPN connection continues to function normally, so there is no behavioral change visible to the user.

CVE-2026-75925 describes a critical CRLF injection vulnerability in IXON VPN Client versions prior to 1.4.7. The flaw allows an attacker to inject arbitrary configuration directives into a file consumed by a privileged subprocess, enabling command execution as root or SYSTEM. The local configuration service accepts changes without any authentication or origin verification, making exploitation straightforward. Injected configurations persist across reboots and VPN restarts, providing long-term persistence with no visible behavioral change to the user. The vulnerability is classified under CWE as improper neutralization of CRLF sequences. CISA has issued an ICS advisory (ICSA-26-246-02) regarding this vulnerability. IXON has also published their own security advisory. Users are urged to upgrade to version 1.4.7 or later to remediate the issue.