CVE-2026-50314: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50314) involves a use-after-free condition in Microsoft 365 Apps for Enterprise, which could allow an unauthorized attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates the attack requires local access with low complexity, no privileges, and user interaction. The impact includes high confidentiality, integrity, and availability consequences. Microsoft has published an official fix and manages remediation for this cloud service. The affected version explicitly stated is 16.0.1.
Potential Impact
Successful exploitation could lead to local code execution by an unauthorized attacker, potentially compromising confidentiality, integrity, and availability of the affected system. However, no active exploitation in the wild has been reported.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users and administrators should follow the guidance in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50314 to ensure their environment is updated and protected.
CVE-2026-50314: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Description
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50314) involves a use-after-free condition in Microsoft 365 Apps for Enterprise, which could allow an unauthorized attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates the attack requires local access with low complexity, no privileges, and user interaction. The impact includes high confidentiality, integrity, and availability consequences. Microsoft has published an official fix and manages remediation for this cloud service. The affected version explicitly stated is 16.0.1.
Potential Impact
Successful exploitation could lead to local code execution by an unauthorized attacker, potentially compromising confidentiality, integrity, and availability of the affected system. However, no active exploitation in the wild has been reported.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users and administrators should follow the guidance in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50314 to ensure their environment is updated and protected.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T17:30:16.975Z
- 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-2026-50314","vendor":"Microsoft"}]
Threat ID: 6a56768d68715ace43f08c1c
Added to database: 07/14/2026, 17:49:01 UTC
Last enriched: 08/13/2026, 14:31:43 UTC
Last updated: 08/25/2026, 22:52:12 UTC
Views: 27
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