CVE-2025-32705: 
vulnerability analysis and mitigation

Microsoft disclosed CVE-2025-32705, an out-of-bounds read vulnerability affecting Microsoft Office Outlook, discovered by Haifei Li from EXPMON. The vulnerability affects multiple versions of Microsoft Office including Office LTSC 2021, LTSC 2024, and Microsoft 365 Apps (Wiz).

The vulnerability stems from an out-of-bounds read condition (CWE-125) in Microsoft Outlook's memory handling functionality. It has been assigned a CVSS 3.1 Base Score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability requires user interaction, as the Preview Pane is not an attack vector - the user must actively open a malicious file for the exploit to succeed (NVD, Wiz).

If successfully exploited, CVE-2025-32705 could allow an attacker to execute arbitrary code on the local system with the privileges of the current user. This could potentially lead to complete system compromise, data theft, or further malware deployment on the affected system (Wiz).

Microsoft has released security updates to address this vulnerability as part of the May 2025 Patch Tuesday. Organizations are strongly advised to apply these patches immediately to all affected Outlook installations. Additional recommended mitigations include exercising caution with email attachments, maintaining updated endpoint security solutions, and monitoring security advisories (Wiz).