CVE-2026-45472: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
CVE-2026-45472 is a high-severity use-after-free vulnerability in Microsoft 365 Apps for Enterprise (version 16.0.1) that leads to a heap-based buffer overflow. This vulnerability enables an unauthorized attacker to execute arbitrary code locally. The vulnerability has a CVSS 3.1 base score of 8.4, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this issue and manages remediation for this cloud-hosted service. No public exploits are currently known.
Potential Impact
Successful exploitation of this vulnerability allows an unauthorized attacker to execute arbitrary code locally, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The CVSS score of 8.4 indicates a high impact severity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch for Microsoft 365 Apps for Enterprise version 16.0.1 as soon as possible. Since this is a cloud service, Microsoft manages remediation server-side; verify the vendor advisory for the latest update status and ensure client applications are updated accordingly.
CVE-2026-45472: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 8.4high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45472 is a high-severity use-after-free vulnerability in Microsoft 365 Apps for Enterprise (version 16.0.1) that leads to a heap-based buffer overflow. This vulnerability enables an unauthorized attacker to execute arbitrary code locally. The vulnerability has a CVSS 3.1 base score of 8.4, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this issue and manages remediation for this cloud-hosted service. No public exploits are currently known.
Potential Impact
Successful exploitation of this vulnerability allows an unauthorized attacker to execute arbitrary code locally, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The CVSS score of 8.4 indicates a high impact severity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch for Microsoft 365 Apps for Enterprise version 16.0.1 as soon as possible. Since this is a cloud service, Microsoft manages remediation server-side; verify the vendor advisory for the latest update status and ensure client applications are updated accordingly.
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-2026-45472","vendor":"Microsoft"}]
Threat ID: 6a284cdc8dd33fbd85664d36
Added to database: 6/9/2026, 5:26:52 PM
Last enriched: 6/9/2026, 10:25:37 PM
Last updated: 6/10/2026, 4:57:24 AM
Views: 2
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