CVE-2025-47162: 
vulnerability analysis and mitigation

A heap-based buffer overflow vulnerability in Microsoft Office (CVE-2025-47162) was disclosed on June 10, 2025, as part of Microsoft's June 2025 Patch Tuesday security updates. The vulnerability allows an unauthorized attacker to execute code locally and received a CVSS v3.1 base score of 8.4 (HIGH) (NVD, Wiz).

The vulnerability is one of four Office-related bugs where the Preview Pane is an attack vector. Specifically, it is a heap-based buffer overflow vulnerability that could allow unauthorized attackers to execute arbitrary code in the context of the current user. Microsoft has assigned their highest exploit index rating to this vulnerability, indicating they expect public exploitation within 30 days (Wiz, Help Net).

The vulnerability enables attackers to execute arbitrary code on affected systems without requiring user interaction, as the Preview Pane serves as an attack vector. When successfully exploited, attackers can potentially combine this vulnerability with privilege escalation bugs to achieve complete system compromise. The critical nature of this vulnerability and its attack vector makes it particularly dangerous in enterprise environments (Wiz).

Microsoft has released patches for this vulnerability as part of their June 2025 Patch Tuesday security updates. Security experts strongly recommend immediate deployment of these Office updates due to the critical nature of the vulnerability and its expected exploitation. Organizations are advised not to delay rolling out Office updates this month given the severity and likelihood of exploitation (Wiz).