#VU80726 Information disclosure in Microsoft products - CVE-2023-36766

Vulnerability identifier: #VU80726

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36766

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

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

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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

Microsoft Office: 2019 for Mac - 2019

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

Office Online Server : before 16.0.10402.20000

Microsoft Excel: before 15.0.5589.1000, 16.0.5413.1000, 15.0.5589.1000, 15.0.5589.1000

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36766

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.