CVE-2026-45643: Microsoft Word Remote Code Execution Vulnerability
Microsoft Word Remote Code Execution Vulnerability
Other sources
Untrusted pointer dereference 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 16.110.26061317
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45643?
The severity of CVE-2026-45643 is rated as high with a score of 7.8.
What is CVE-2026-45643?
CVE-2026-45643 is a remote code execution vulnerability caused by an untrusted pointer dereference in Microsoft Office Word.
How do I fix CVE-2026-45643?
To fix CVE-2026-45643, you should update your Microsoft 365 Apps and Microsoft Word to the latest version released by Microsoft.
Who is affected by CVE-2026-45643?
CVE-2026-45643 affects users of Microsoft 365 Apps for Enterprise, Microsoft Office 2021, Microsoft Office 2024, and various versions of Microsoft Word.
What could happen if I am affected by CVE-2026-45643?
If you are affected by CVE-2026-45643, an unauthorized attacker could exploit the vulnerability to execute code locally on your system.