CVE-2026-63532: Microsoft Office Remote Code Execution Vulnerability
Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.
Other sources
Microsoft Office Remote Code Execution Vulnerability
— 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 16.112.26081010 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5565.1001Patch KB5002897 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
What is the severity of CVE-2026-63532?
CVE-2026-63532 has a severity rating of high, designated at 7.8 on the CVSS scale.
How do I fix CVE-2026-63532?
To fix CVE-2026-63532, ensure that all affected Microsoft Office software is updated to the latest version with available security patches.
What type of vulnerability is CVE-2026-63532?
CVE-2026-63532 is classified as a remote code execution vulnerability resulting from an integer overflow in Microsoft Office.
Which software versions are affected by CVE-2026-63532?
CVE-2026-63532 affects Microsoft Office 2016, Microsoft 365 Apps for Enterprise, various Microsoft Office LTSC versions, and Microsoft Office for Mac.
What can an attacker achieve with CVE-2026-63532?
An attacker could execute arbitrary code locally on a vulnerable system due to CVE-2026-63532, potentially compromising its security.