CVE-2022-25166

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-04-14 · updated 2026-06-17
Weakness: CWE-200

Description

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: 2.0.0

References

https://github.com/RhinoSecurityLabs/CVEs
https://rhinosecuritylabs.com/aws/cve-2022-25165-aws-vpn-client/
https://github.com/RhinoSecurityLabs/CVEs
https://rhinosecuritylabs.com/aws/cve-2022-25165-aws-vpn-client/

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