Microsoft Outlook Security Feature Bypass Vulnerability

Microsoft Outlook has a vulnerability that allows attackers to bypass security protections designed to block malicious content and suspicious attachments. This weakness could allow harmful emails or files to reach users who thought they were protected.

CWE-367 (Time-of-check Time-of-use race condition) in Outlook's security validation mechanisms allows an attacker to circumvent attachment or content filtering by exploiting a race condition between security checks and execution. The vulnerability requires user interaction or specific timing conditions and can result in execution of malicious code or delivery of phishing content.