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Vulnerability DatabaseCVE-2025-59235
CVE-2025-59235:
vulnerability analysis and mitigation
Overview
An out-of-bounds read vulnerability in Microsoft Office Excel (CVE-2025-59235) was disclosed on October 14, 2025. This security flaw affects multiple Microsoft products including Excel 2016, SharePoint Server 2019, Office Online Server, and various versions of Microsoft 365 Apps (NVD).
Technical details
The vulnerability is classified as an out-of-bounds read (CWE-125) that could allow unauthorized access to information. Microsoft has assigned a CVSS v3.1 base score of 7.1 (High) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H, indicating local attack vector, low attack complexity, no privileges required, and user interaction required (NVD).
Impact
The vulnerability allows an unauthorized attacker to disclose information locally. The high CVSS score indicates significant potential impact on confidentiality and availability of the affected systems (NVD).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability. The fixes are available through Microsoft Update, Microsoft Update Catalog, and Microsoft Download Center. For Office Online Server, the patch is included in build 16.0.10417.20059 (Microsoft Support).
Additional resources
Source: This report was generated using AI
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