CVE-2026-64906 evidence review
Microsoft Microsoft 365 Apps for Enterprise, Microsoft Access 2016, Microsoft Access 2016 (32-bit edition)
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code locally.
This record remains available for product and version identification, but it is not presented as a complete remediation procedure. Confirm the affected range and the supported fix in a direct vendor advisory before changing production systems.
Identify the product and installed version
Record whether Microsoft Microsoft 365 Apps for Enterprise, Microsoft Access 2016, Microsoft Access 2016 (32-bit edition) is present, where it is installed, and which interfaces are exposed.
- Record the product name, package or appliance identifier, and installed version.
- Identify internet-facing, administrative, API, and internal access paths.
- Preserve the pre-change configuration and relevant service logs.
Compare the affected range
Use the current record as an identification aid: >= 16.0.1 < https://aka.ms/OfficeSecurityReleases, >= 16.0.0 < 16.0.5565.1000, >= 19.0.0 < https://aka.ms/OfficeSecurityReleases, >= 16.0.0 < https://aka.ms/OfficeSecurityReleases, 2016. Resolve incomplete inventory results before deciding that an asset is unaffected.
Verify the authoritative remediation source
Open the linked source material and locate a direct vendor advisory for this CVE. Confirm the supported fixed release and product-specific update path before making a production change.
Operational boundary
This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.