#VU109083 Out-of-bounds read in Microsoft products - CVE-2025-32704

Vulnerability identifier: #VU109083

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-32704

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office
Client/Desktop applications / Office applications
Microsoft Excel
Client/Desktop applications / Office applications
Microsoft 365 Apps for Enterprise
Client/Desktop applications / Office applications
Microsoft Office LTSC
Client/Desktop applications / Other client software

Vendor: Microsoft

Description

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

The vulnerability exists due to a boundary condition in Microsoft Excel. A remote attacker can trigger an out-of-bounds read error and read contents of memory on the system, leading to arbitrary code execution.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2019

Microsoft Excel: 2016

Microsoft Office LTSC: 2021 - 2024

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

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External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32704

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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.