Use After Free Vulnerability in Microsoft Office Excel

CVE-2025-62203

What is CVE-2025-62203?

CVE-2025-62203 is a use after free vulnerability found in Microsoft Office Excel, a widely-used spreadsheet application that supports data organization, analysis, and visualization. This vulnerability arises when the application improperly manages memory, allowing an attacker to exploit this flaw to execute arbitrary code within the context of the vulnerable application. Should this vulnerability be exploited successfully, it could enable an unauthorized user to gain full control over affected systems and access sensitive information, potentially compromising organizational data integrity and confidentiality.

Potential impact of CVE-2025-62203

1. Unauthorized Code Execution: The primary impact of this vulnerability is the potential for unauthorized code execution. Attackers could leverage it to run malicious code on the victim's system, which could lead to a range of harmful outcomes, including data breaches and system control.

2. Data Compromise: Exploitation of this flaw can result in unauthorized access to sensitive data contained in Excel files, which are often used for financial records, customer information, and proprietary business analytics, posing a significant risk to organizational privacy and compliance.

3. Increased Attack Surface: Given the popularity of Microsoft Office Excel across various industries, this vulnerability increases the potential attack surface for organizations. Attackers may target users, leading to widespread exploitation if the vulnerability remains unaddressed, exacerbating overall cybersecurity risks.

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