CVE-2026-20944: CWE-125: Out-of-bounds Read in Microsoft Microsoft 365 Apps for Enterprise
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20944) involves an out-of-bounds read in Microsoft Office Word, part of Microsoft 365 Apps for Enterprise. The flaw enables unauthorized local code execution. It has a CVSS 3.1 base score of 8.4, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix and manages remediation for this cloud service. The affected version explicitly identified is 16.0.1.
Potential Impact
Successful exploitation allows an unauthorized attacker to execute code locally, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The CVSS score of 8.4 reflects high impact across these security properties.
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 update as directed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20944 to mitigate this vulnerability.
CVE-2026-20944: CWE-125: Out-of-bounds Read in Microsoft Microsoft 365 Apps for Enterprise
Description
Out-of-bounds read in Microsoft Office Word 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-2026-20944) involves an out-of-bounds read in Microsoft Office Word, part of Microsoft 365 Apps for Enterprise. The flaw enables unauthorized local code execution. It has a CVSS 3.1 base score of 8.4, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix and manages remediation for this cloud service. The affected version explicitly identified is 16.0.1.
Potential Impact
Successful exploitation allows an unauthorized attacker to execute code locally, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The CVSS score of 8.4 reflects high impact across these security properties.
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 update as directed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20944 to mitigate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.339Z
- 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-2026-20944","vendor":"Microsoft"}]
Threat ID: 69668ae5a60475309f9ae229
Added to database: 01/13/2026, 18:11:49 UTC
Last enriched: 07/30/2026, 23:55:32 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 315
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