CVE-2026-65657: 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 16.112.26081010 - 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-2026-65657?
The severity of CVE-2026-65657 is high with a score of 7.8.
How do I fix CVE-2026-65657?
To fix CVE-2026-65657, ensure that you apply the latest security updates available for your Microsoft Office products.
What type of vulnerability is CVE-2026-65657?
CVE-2026-65657 is a remote code execution vulnerability caused by a use after free error in Microsoft Office.
What software is affected by CVE-2026-65657?
CVE-2026-65657 affects various Microsoft Office versions, including Microsoft 365 Apps for Enterprise and Microsoft Office 2019.
Can CVE-2026-65657 allow unauthorized access?
Yes, CVE-2026-65657 can allow an unauthorized attacker to execute code locally on vulnerable systems.