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Vulnerability DatabaseCVE-2021-40480
CVE-2021-40480:
vulnerability analysis and mitigation
Overview
Microsoft Office Visio Remote Code Execution Vulnerability (CVE-2021-40480) was disclosed on October 12, 2021. The vulnerability affects multiple Microsoft products including Microsoft 365 Apps Enterprise, Office 2019, and Office Long Term Servicing Channel 2021 (NVD).
Technical details
The vulnerability exists within the parsing of EMF files in Microsoft Office Visio. The specific flaw results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (High) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (ZDI Advisory).
Impact
If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process. The vulnerability can lead to complete compromise of the affected system, with high impacts on confidentiality, integrity, and availability (ZDI Advisory).
Mitigation and workarounds
Microsoft has issued a security update to address this vulnerability. Users are advised to apply the available patches through the Microsoft security update system (MSRC Advisory).
Additional resources
Source: This report was generated using AI
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