Remote Code Execution Vulnerability in Microsoft Access

CVE-2025-21395

What is CVE-2025-21395?

CVE-2025-21395 is a remote code execution vulnerability found in Microsoft Access, a widely used application for database management within the Microsoft Office suite. This vulnerability poses a significant risk to organizations as it allows malicious actors to execute arbitrary code on affected systems. If exploited, it could lead to unauthorized access and manipulation of sensitive data within Microsoft Access databases, compromising the integrity and confidentiality of organizational information.

Technical Details

CVE-2025-21395 involves a flaw in the way Microsoft Access processes certain inputs, which can be manipulated to execute malicious code remotely. The technical specifics revolve around improper validation of user-supplied data, leading to potential exploitation routes that could allow an attacker to gain execution privileges. This vulnerability requires a particular set of conditions to be met for successful exploitation, which could involve convincing a user to open a specially crafted file or document.

Potential impact of CVE-2025-21395

1. Unauthorized Access and Control: Exploitation of this vulnerability could grant attackers remote access, enabling them to execute commands and control the system hosting Microsoft Access, leading to widespread unauthorized activities.

2. Data Compromise: With the ability to execute code, attackers can manipulate or extract sensitive data stored in Microsoft Access databases, resulting in potential data breaches and loss of confidential information.

3. System Integrity Threats: Upon gaining access, attackers can deploy further exploits or malware within the organization's network, threatening the overall integrity of the IT infrastructure and potentially leading to larger-scale cyber incidents.

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