CVE-2026-44819: Microsoft Office Remote Code Execution Vulnerability
Heap-based buffer overflow 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 https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.110.26061317 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5556.1005Patch KB5002878 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20153Patch KB5002876 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19725.20384Patch KB5002873 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5556.1005Fixed in 16.0.5556.1002Patch KB5002881
Event History
Frequently Asked Questions
What is the severity of CVE-2026-44819?
CVE-2026-44819 has a severity rating of high at 7.8.
What software is affected by CVE-2026-44819?
CVE-2026-44819 affects Microsoft Office 2016, Office 2019, Office 2021, Office 2024, Microsoft 365 Apps, Microsoft 365 Apps for Enterprise, SharePoint Server, and Office 365 for Mac.
How does CVE-2026-44819 affect Microsoft Office?
CVE-2026-44819 allows an unauthorized attacker to execute remote code due to a heap-based buffer overflow in Microsoft Office.
What is the impact of a successful exploit of CVE-2026-44819?
Exploiting CVE-2026-44819 can lead to unauthorized code execution on the affected system.
How do I fix CVE-2026-44819?
To fix CVE-2026-44819, you should apply the latest security updates provided by Microsoft for the affected Office products.