Microsoft Office Outlook is the Outlook email client within the Microsoft Office suite, delivering email, calendar, and collaboration features typically integrated with Exchange and Microsoft 365.
Overview
Microsoft Office Outlook is the Outlook email client within the Microsoft Office suite, delivering email, calendar, and collaboration features typically integrated with Exchange and Microsoft 365. Its widespread deployment and ability to process incoming messages and attachments make it a high-value target, where vulnerabilities can enable remote code execution, data access, or network compromise. In cybersecurity, Outlook vulnerabilities are significant due to potential impact across endpoints and organizations via phishing, malicious attachments, or crafted messages.
Related Threat Clusters
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Recent Intelligence Reports
- Microsoft Outlook Vulnerability Let Attackers Execute Malicious Code Remotely — Cybersecuritynews · December 10, 2025
- CVE-2025 — Api.Msrc.Microsoft · December 9, 2025