CVE-2026-105593: Microsoft Office Access Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office 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 16.0.17932.21056 - 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 16.0.14334.20974
Event History
Frequently Asked Questions
Which environments should be prioritized for review?
Prioritize systems running Microsoft 365 Apps for Enterprise or Microsoft Office LTSC 2021 or 2024, in either 32-bit or 64-bit editions, where Microsoft Access is present and used.
What access and interaction does exploitation require?
The attacker does not need prior privileges, and the attack vector is network-based. Exploitation requires user interaction, so an attacker must cause a user to interact with the malicious content or request.