CVE-2026-45474: 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-2026-45474) involves a use-after-free condition in Microsoft 365 Apps for Enterprise. Exploitation could allow an attacker to execute arbitrary code locally without user interaction or privileges. The vulnerability is classified under CWE-416. Microsoft has published an official fix and manages remediation for this cloud service. No known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation could lead to local code execution with high impact on confidentiality, integrity, and availability. This could allow an attacker to run arbitrary code on the affected system, potentially leading to full compromise of the application environment.
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 refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45474 for the latest patch and update guidance.
CVE-2026-45474: 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 8.4high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45474) involves a use-after-free condition in Microsoft 365 Apps for Enterprise. Exploitation could allow an attacker to execute arbitrary code locally without user interaction or privileges. The vulnerability is classified under CWE-416. Microsoft has published an official fix and manages remediation for this cloud service. No known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation could lead to local code execution with high impact on confidentiality, integrity, and availability. This could allow an attacker to run arbitrary code on the affected system, potentially leading to full compromise of the application environment.
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 refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45474 for the latest patch and update guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T16:06:43.099Z
- 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-2026-45474","vendor":"Microsoft"}]
Threat ID: 6a284cdc8dd33fbd85664d39
Added to database: 06/09/2026, 17:26:52 UTC
Last enriched: 07/29/2026, 21:56:24 UTC
Last updated: 07/31/2026, 19:30:14 UTC
Views: 102
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