Out-of-Bounds Read Vulnerability in Azure Application Gateway by Microsoft

CVE-2025-64656

What is CVE-2025-64656?

CVE-2025-64656 is an out-of-bounds read vulnerability found in the Azure Application Gateway, a web traffic load balancer that enables organizations to manage their web applications more securely and efficiently. This vulnerability allows unauthorized attackers to potentially elevate their privileges over a network. The out-of-bounds read behavior could lead to unintended information disclosure, which could be exploited by malicious actors to gain insight into sensitive system data or user credentials. As organizations increasingly rely on cloud services like Azure for critical operations, a vulnerability of this nature poses a significant threat to the integrity and confidentiality of their data.

Potential impact of CVE-2025-64656

1. Unauthorized Access: The vulnerability can grant attackers the ability to gain unauthorized access to network resources, which could lead to further exploitation of other connected systems and sensitive information.

2. Data Exposure: Attackers may exploit this vulnerability to read memory contents, potentially exposing confidential data such as user sessions, API keys, or other sensitive information stored within the Azure Application Gateway.

3. Privilege Escalation: The ability to elevate privileges means that attackers could gain access to higher-level functions and data within the organization’s infrastructure, leading to comprehensive system compromise and potential data breaches.

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