Microsoft Office Information Disclosure Vulnerability
CVE-2026-44821

5.5MEDIUM

Key Information:

Vendor: Microsoft
Status: Microsoft 365 Apps For Enterprise; Microsoft Office 2016; Microsoft Office 2019; Microsoft Office 365 For Mac
Vendor: CVE Published:; 9 June 2026

What is CVE-2026-44821?

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 16.0.5556.1005

Microsoft Office 2019 32-bit Systems 19.0.0

Score:

5.5

Severity:

MEDIUM

Confidentiality:

High

Integrity:

None

Availability:

High

Attack Vector:

Local

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

Required

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

CVE-2026-44821 Data