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CVE-2025-8069: Local Privilege Escalation Vulnerability in AWS Client VPN Windows Client

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-23 · updated 2026-06-17
• Weakness: CWE-276

Description

During the AWS Client VPN client installation on Windows devices, the install process references the C:\usr\local\windows-x86_64-openssl-localbuild\ssl directory location to fetch the OpenSSL configuration file. As a result, a non-admin user could place arbitrary code in the configuration file. If an admin user starts the AWS Client VPN client installation process, that code could be executed with root-level privileges. This issue does not affect Linux or Mac devices. We recommend users discontinue any new installations of AWS Client VPN on Windows prior to version 5.2.2.

Affected products

• AWS Client VPN: from 5.0.0 before 5.2.2; 4.1.0 — fixed in 5.2.2

How to fix

Upgrade to a fixed version: AWS Client VPN 5.2.2. Check the vendor advisory for mitigations.

References

• https://aws.amazon.com/security/security-bulletins/AWS-2025-014/
• https://docs.aws.amazon.com/vpn/latest/clientvpn-user/client-vpn-connect-windows-release-notes.html

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