CVE-2026-45461: Microsoft Office Remote Code Execution Vulnerability
Microsoft Office Remote Code Execution Vulnerability
Other sources
Use after free 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 16.0.5556.1005Patch KB5002878 - 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 https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.20131.20024
Event History
Frequently Asked Questions
What is the severity of CVE-2026-45461?
CVE-2026-45461 has a severity score of 8.4, categorized as high.
How do I fix CVE-2026-45461?
To mitigate CVE-2026-45461, ensure that you apply the latest updates and patches provided by Microsoft for Microsoft Office products.
What is CVE-2026-45461?
CVE-2026-45461 is a remote code execution vulnerability in Microsoft Office caused by a heap-based buffer overflow.
What software versions are affected by CVE-2026-45461?
CVE-2026-45461 affects multiple versions of Microsoft Office, including 2016, 2019, 2021, 2024, and Microsoft 365 Apps.
What attack vector does CVE-2026-45461 utilize?
CVE-2026-45461 can be exploited by an unauthorized attacker to execute code locally through the application.