Information disclosure in Microsoft Excel

Published: 2023-09-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-36766
Exploitation vector Network
Public exploit N/A
Vulnerable software
Microsoft Office LTSC 2021
Other software / Other software solutions

Microsoft Office
Client/Desktop applications / Office applications

Microsoft 365 Apps for Enterprise
Client/Desktop applications / Office applications

Microsoft Excel
Client/Desktop applications / Office applications

Office Online Server
Server applications / Other server solutions

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU80726

Risk: Medium


CVE-ID: CVE-2023-36766


Exploit availability:


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file and gain unauthorized access to sensitive information on the system.


Install updates from vendor's website.

Vulnerable software versions

Microsoft Office LTSC 2021: 32 bit editions - 2021 for Mac

Microsoft Office: 2019 - 2019 for Mac

Microsoft 365 Apps for Enterprise: 32-bit Systems - 64-bit Systems

Office Online Server : before 16.0.10402.20000

Microsoft Excel: before 16.0.5413.1000

Fixed software versions

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?