CVE-2026-64915: Microsoft Office Word Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Other sources
Microsoft Office Word 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 16.0.5565.1000Patch KB5002901 - 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 https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64915?
The severity of CVE-2026-64915 is rated as high, with a score of 7.8.
How do I fix CVE-2026-64915?
To fix CVE-2026-64915, apply the latest security updates provided by Microsoft for the affected versions of Microsoft Word.
What software is affected by CVE-2026-64915?
CVE-2026-64915 affects Microsoft Word 2016, Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, and multiple editions of Microsoft Office LTSC.
What type of attack does CVE-2026-64915 allow?
CVE-2026-64915 allows an unauthorized attacker to execute remote code locally on vulnerable systems.
What vulnerability type does CVE-2026-64915 represent?
CVE-2026-64915 is classified as a heap-based buffer overflow vulnerability.