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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2025-0159
Privilege Escalation Vulnerability in AWS Client VPN

Original Issue Date:July 28, 2025

Severity Rating: HIGH

Software Affected

  • AWS Client VPN versions prior to 5.2.2 for Windows

Overview

A vulnerability has been reported in AWS Client VPN, which could be exploited by a local attacker with low-privilege access to potentially escalate permissions and execute arbitrary code on the targeted system.

Target Audience:
All organizations and individuals using AWS Client VPN.

Impact Assessment:
Potential for privilege escalation, and execution of arbitrary code.

Risk Assessment:
High risk of unauthorized access, and full system compromise.

Description

AWS Client VPN is a managed client-based VPN service that enables secure access to AWS and on-premises resources. The AWS Client VPN client software runs on end-user devices, supporting Windows, macOS, and Linux and provides the ability for end users to establish a secure tunnel to the AWS Client VPN Service.

The vulnerability exists in AWS Client VPN due to the flawed installation process which involves an insecure directory reference during OpenSSL configuration file retrieval. An attacker could exploit this vulnerability by placing malicious crafted code in the configuration file.

Successful exploitation of this vulnerability could allow a local attacker with low-privilege access to potentially escalate permissions and execute arbitrary code on the targeted system.

Solution

Apply appropriate fixes mentioned by:
https://aws.amazon.com/security/security-bulletins/AWS-2025-014/

Vendor Information

AWS
https://aws.amazon.com/vpn/client-vpn/

References

AWS
https://aws.amazon.com/security/security-bulletins/AWS-2025-014/

CVE Name
CVE-2025-8069

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-22902657

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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