CVE-2026-47293: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
CVE-2026-47293 is a use-after-free vulnerability (CWE-416) in Microsoft Office Click-To-Run component of Microsoft 365 Apps for Enterprise. This vulnerability enables an authorized local attacker to elevate privileges by exploiting improper memory management. The issue affects version 16.0.1. Microsoft has published an official fix and manages remediation for this cloud service. The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges on the affected system. This could lead to full compromise of the affected Microsoft 365 Apps for Enterprise environment, impacting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users and administrators should apply the official updates as directed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47293 to mitigate this vulnerability.
CVE-2026-47293: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Description
Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-47293 is a use-after-free vulnerability (CWE-416) in Microsoft Office Click-To-Run component of Microsoft 365 Apps for Enterprise. This vulnerability enables an authorized local attacker to elevate privileges by exploiting improper memory management. The issue affects version 16.0.1. Microsoft has published an official fix and manages remediation for this cloud service. The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges on the affected system. This could lead to full compromise of the affected Microsoft 365 Apps for Enterprise environment, impacting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users and administrators should apply the official updates as directed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47293 to mitigate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-18T23:53:33.897Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47293","vendor":"Microsoft"}]
Threat ID: 6a284cec8dd33fbd85664fbd
Added to database: 6/9/2026, 5:27:08 PM
Last enriched: 6/9/2026, 6:10:46 PM
Last updated: 6/10/2026, 4:51:12 AM
Views: 8
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