CVE-2022-25166: Amazon Aws Client VPN

Medium severity, CVSS 5.0. EPSS: 1.5% chance of exploitation in the next 30 days.

An issue was discovered in Amazon AWS VPN Client 2.0.0. It is possible to include a UNC path in the OpenVPN configuration file when referencing file paths for parameters (such as auth-user-pass). When this file is imported and the client attempts to validate the file path, it performs an open operation on the path and leaks the user's Net-NTLMv2 hash to an external server. This could be exploited by having a user open a crafted malicious ovpn configuration file.

Affected products

• Amazon Aws Client VPN: version 2.0.0 only

Published 2022-04-14. Last modified 2026-06-17.