Heap-based Buffer Overflow in Microsoft Office Access
CVE-2026-64914

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Access 2016
Microsoft Access 2016 (32-bit Edition)
Microsoft Office 2019
Vendor
CVE Published:
11 August 2026

What is CVE-2026-64914?

A vulnerability exists in Microsoft Office Access that allows unauthorized attackers to perform a heap-based buffer overflow, potentially leading to remote code execution on affected systems. Proper security measures and timely patch applications are essential to mitigate this risk.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Access 2016 (32-bit edition) 16.0.0 < 16.0.5565.1000

Microsoft Access 2016 x64-based Systems 16.0.0 < 16.0.5565.1000

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.