CVE-2026-63528: Microsoft Office Word Information Disclosure Vulnerability
Microsoft Office Word Information Disclosure Vulnerability
Other sources
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.112.26081010 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5565.1000Patch KB5002901
Event History
Frequently Asked Questions
What is the severity of CVE-2026-63528?
CVE-2026-63528 is rated with a medium severity level of 5.5.
How do I fix CVE-2026-63528?
To fix CVE-2026-63528, ensure you apply the latest security updates provided by Microsoft for affected Office products.
What type of vulnerability is CVE-2026-63528?
CVE-2026-63528 is an information disclosure vulnerability leading to an out-of-bounds read in Microsoft Office Word.
Which software versions are affected by CVE-2026-63528?
CVE-2026-63528 affects Microsoft 365 Apps for Enterprise, Microsoft Word 2016, Microsoft Office 2019, and various editions of Microsoft Office LTSC.
What impact does CVE-2026-63528 have on users?
CVE-2026-63528 allows an unauthorized attacker to disclose sensitive information locally from the affected Microsoft Office applications.