Use of uninitialized resource in Microsoft products - CVE-2025-53759
Published: August 13, 2025
Vulnerability identifier: #VU114047
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-53759
CWE-ID: CWE-908
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Microsoft Office LTSC
Microsoft 365 Apps for Enterprise
Microsoft Office
Office Online Server
Microsoft Office LTSC
Microsoft 365 Apps for Enterprise
Microsoft Office
Office Online Server
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file, trigger uninitialized usage of resources and execute arbitrary code on the target system.
How to mitigate CVE-2025-53759
Install updates from vendor's website.