CVE-2026-64920: Microsoft Access Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
Other sources
Microsoft Access 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 16.0.5565.1000Patch KB5002832
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64920?
The severity of CVE-2026-64920 is rated high with a score of 7.8.
How do I fix CVE-2026-64920?
To fix CVE-2026-64920, apply the latest security updates provided by Microsoft for affected versions of Microsoft Access.
What types of systems are affected by CVE-2026-64920?
CVE-2026-64920 affects Microsoft Access 2016, Microsoft 365 Apps for Enterprise, Microsoft Office 2019, Microsoft Office 2021, Microsoft Office 2024, and Microsoft Office LTSC 2024 for 64-bit editions.
What is the impact of CVE-2026-64920?
CVE-2026-64920 allows unauthorized attackers to execute arbitrary code locally due to a heap-based buffer overflow.
When was CVE-2026-64920 published?
CVE-2026-64920 was published on August 11, 2026.