CVE-2026-75925: IXON VPN Client CRLF Injection
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IXON VPN Clientto a version that resolves this vulnerability.Fixed in 1.4.7 - Remove
Remove
IXON VPN Clientfrom your environment.If the IXON VPN client is no longer needed, uninstall the VPN client from the computer(s).
Event History
Frequently Asked Questions
Which installations are affected?
IXON VPN Client versions before 1.4.7 are affected. The issue involves the local service accepting configuration changes and passing persisted configuration to a privileged subprocess.
Does exploitation require authentication or a trusted requester?
No. The configuration interface accepts changes without authenticating the requester or verifying its origin. User interaction is still required according to the supplied CVSS vector.
What level of access can an attacker obtain?
An attacker can inject additional configuration directives that cause commands to run as root or SYSTEM. This can result in high impact to confidentiality, integrity, and availability.
Would a restart or normal VPN behavior reveal or remove the malicious change?
No. The injected configuration persists across restarts of both the client and operating system. The VPN connection continues functioning normally, with no visible behavioral change for the user.