CVE-2026-45645: Microsoft Office Remote Code Execution Vulnerability
Microsoft Office Remote Code Execution Vulnerability
Other sources
Untrusted pointer dereference in Microsoft Office 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 16.110.26061317 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5556.1001Patch KB5002852
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45645?
The severity of CVE-2026-45645 is rated high with a score of 7.8.
How does CVE-2026-45645 affect Microsoft Office?
CVE-2026-45645 exploits a heap-based buffer overflow in Microsoft Office, allowing unauthorized local code execution.
Which versions of Microsoft Office are affected by CVE-2026-45645?
CVE-2026-45645 affects Microsoft Office 2016, Microsoft 365 Apps for Enterprise, Microsoft Office 2019, Microsoft Office 2021, Microsoft Office 2024, and Microsoft Office 365 for Mac.
How can I mitigate the risks associated with CVE-2026-45645?
To mitigate CVE-2026-45645, it is recommended to apply the latest security updates provided by Microsoft for the affected Office versions.
What is the nature of the exploit for CVE-2026-45645?
The exploit for CVE-2026-45645 involves a heap-based buffer overflow, which can lead to remote code execution.