Heap-Based Buffer Overflow in Microsoft Teams by Microsoft

CVE-2025-53783

What is CVE-2025-53783?

CVE-2025-53783 is a notable vulnerability found in Microsoft Teams, a widely used collaboration platform that facilitates communication and teamwork among users in organizations. This specific vulnerability arises from a heap-based buffer overflow, which occurs when a program writes more data to a buffer than it can hold, potentially allowing attackers to overwrite adjacent memory. Such a flaw could be exploited by unauthorized individuals to execute arbitrary code over a network, leading to serious repercussions for organizations utilizing Microsoft Teams for internal and external communications. The technical implications of this vulnerability suggest that it could enable attackers to manipulate application behavior, access sensitive information, or disrupt service continuity, posing significant threats to business operations.

Potential impact of CVE-2025-53783

1. Remote Code Execution: The primary concern with CVE-2025-53783 is its potential to allow attackers to execute unauthorized code remotely, which could compromise sensitive data or grant malicious actors control over affected systems.

2. Data Breach Risk: By exploiting this vulnerability, attackers could gain access to confidential communications and files within Microsoft Teams, increasing the likelihood of a data breach that could expose proprietary information or personal data.

3. Service Disruption: Exploitation of this vulnerability may lead to unexpected behavior or complete shutdowns of Microsoft Teams, affecting organizational productivity and collaboration. Such service disruption can hinder communication, project management, and overall workflow, creating operational challenges.

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