CVE-2026-69477: Microsoft Office Access Remote Code Execution Vulnerability
Overview
- Severity
- High (CVSS 7.3)
- CVSS Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Category
- Remote Code Execution
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Less Likely
- Patch Tuesday
- 2026-Sep
- Released
- 2026-09-08
Description
Heap-based buffer overflow in Microsoft Office Access allows an authorized attacker to execute code locally.
FAQ
According to the CVSS metric, user interaction is required (UI:R) and privileges required is Low (PR:L). What does that mean for this vulnerability?
The file must be stored in a location that allows an attacker write access, enabling the file to be corrupted. An attacker must send a user a crafted file and convince them to load it.
Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
Affected Products (10)
Microsoft Office
- Microsoft Office 2019 for 32-bit editions
- Microsoft Office 2019 for 64-bit editions
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Office LTSC 2024 for 32-bit editions
- Microsoft Office LTSC 2024 for 64-bit editions
- Microsoft Access 2016 (32-bit edition)
- Microsoft Access 2016 (64-bit edition)
Security Updates (1)
Acknowledgments
Anonymous, yhw & txz
Revision History
- 2026-09-08: Information published.