CVE-2026-63527: Microsoft Office Word Remote Code Execution Vulnerability
Microsoft Office Word Remote Code Execution Vulnerability
Other sources
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code 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-2026-63527?
The severity of CVE-2026-63527 is high with a score of 7.8.
What types of software are affected by CVE-2026-63527?
CVE-2026-63527 affects multiple versions of Microsoft Word, including Microsoft Word 2016, Microsoft 365 Apps for Enterprise, and various editions of Microsoft Office LTSC.
How do I fix CVE-2026-63527?
To fix CVE-2026-63527, ensure your Microsoft Office applications are updated to the latest security patches provided by Microsoft.
What is the impact of CVE-2026-63527?
CVE-2026-63527 allows an unauthorized attacker to execute code locally through a stack-based buffer overflow in Microsoft Office Word.
Is there a workaround for CVE-2026-63527?
Currently, disabling macros in Microsoft Word may help mitigate the risk associated with CVE-2026-63527 until a patch is applied.