Microsoft has disclosed a serious vulnerability in its collaboration platform, Microsoft Teams, that could open the door to Remote Code Execution (RCE) attacks. The flaw, tracked as CVE-2025-53783, carries a CVSS score of 7.5 and is categorized as “Important.”
The issue arises from a heap-based buffer overflow, a well-known software weakness classified under CWE-122. In this type of vulnerability, an application writes more data to a buffer located in the heap than it was allocated to hold. This can result in adjacent memory corruption, giving attackers a pathway to inject and execute arbitrary code.
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