Microsoft Word Remote Code Execution Vulnerability
Priority MEDIUM 43Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Microsoft Word Remote Code Execution Vulnerability
Why it matters now
EPSS 0.05985 93rd percentileScored 2026-11-07
Fix Fixed Microsoft SharePoint Enterprise Server 2016 (Microsoft): 16.0.5227.1000Microsoft SharePoint Enterprise Server 2013 Service Pack 1 (Microsoft): 15.0.5389.1000+6 more products
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 to before 16.0.5227.1000 | 16.0.5227.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Enterprise Server 2013 Service Pack 1 | 15.0.0 to before 15.0.5389.1000 | 15.0.5389.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 to before 16.0.10379.20000 | 16.0.10379.20000 | Patch available | CNA |
| Microsoft | Microsoft Office 2019 | 19.0.0 to before https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases | Patch available | CNA |
| Microsoft | Microsoft Office Online Server | 16.0.1 to before 16.0.10379.20000 | 16.0.10379.20000 | Patch available | CNA |
| Microsoft | Microsoft Word 2016 | 16.0.1 to before 16.0.5227.1000 | 16.0.5227.1000 | Patch available | CNA |
| Microsoft | Microsoft Office Web Apps Server 2013 Service Pack 1 | 15.0.1 to before 15.0.5389.1000 | 15.0.5389.1000 | Patch available | CNA |
| Microsoft | Microsoft Word 2013 Service Pack 1 | 15.0.1 to before 15.0.5389.1000 | 15.0.5389.1000 | Patch available | CNA |
| Microsoft | Microsoft Word 2013 Service Pack 1 | 15.0.1 to before 15.0.5389.1000 | 15.0.5389.1000 | Patch available | CNA |
- Microsoft SharePoint Enterprise Server 2016 VendorMicrosoft Affected 16.0.0 to before 16.0.5227.1000 Fixed in 16.0.5227.1000 Patch available CNA
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1 VendorMicrosoft Affected 15.0.0 to before 15.0.5389.1000 Fixed in 15.0.5389.1000 Patch available CNA
- Microsoft SharePoint Server 2019 VendorMicrosoft Affected 16.0.0 to before 16.0.10379.20000 Fixed in 16.0.10379.20000 Patch available CNA
- Microsoft Office 2019 VendorMicrosoft Affected 19.0.0 to before https://aka.ms/OfficeSecurityReleases Fixed in https://aka.ms/OfficeSecurityReleases Patch available CNA
- Microsoft Office Online Server VendorMicrosoft Affected 16.0.1 to before 16.0.10379.20000 Fixed in 16.0.10379.20000 Patch available CNA
- Microsoft Word 2016 VendorMicrosoft Affected 16.0.1 to before 16.0.5227.1000 Fixed in 16.0.5227.1000 Patch available CNA
- Microsoft Office Web Apps Server 2013 Service Pack 1 VendorMicrosoft Affected 15.0.1 to before 15.0.5389.1000 Fixed in 15.0.5389.1000 Patch available CNA
- Microsoft Word 2013 Service Pack 1 VendorMicrosoft Affected 15.0.1 to before 15.0.5389.1000 Fixed in 15.0.5389.1000 Patch available CNA
- Microsoft Word 2013 Service Pack 1 VendorMicrosoft Affected 15.0.1 to before 15.0.5389.1000 Fixed in 15.0.5389.1000 Patch available CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:* | 2019 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office_web_apps_server:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* | 2019 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:word:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:word:2013:sp1:*:*:rt:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office_web_apps_server:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:word:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:word:2013:sp1:*:*:rt:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:word:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
Remediation
- Fix · CNA Microsoft SharePoint Enterprise Server 2016 (Microsoft) Fixed in 16.0.5227.1000
- Fix · CNA Microsoft SharePoint Enterprise Server 2013 Service Pack 1 (Microsoft) Fixed in 15.0.5389.1000
- Fix · CNA Microsoft SharePoint Server 2019 (Microsoft) Fixed in 16.0.10379.20000
- Fix · CNA Microsoft Office 2019 (Microsoft) Fixed in https://aka.ms/OfficeSecurityReleases
- Fix · CNA Microsoft Office Online Server (Microsoft) Fixed in 16.0.10379.20000
- Fix · CNA Microsoft Word 2016 (Microsoft) Fixed in 16.0.5227.1000
- Fix · CNA Microsoft Office Web Apps Server 2013 Service Pack 1 (Microsoft) Fixed in 15.0.5389.1000
- Fix · CNA Microsoft Word 2013 Service Pack 1 (Microsoft) Fixed in 15.0.5389.1000
- Fix · CNA Microsoft Word 2013 Service Pack 1 (Microsoft) Fixed in 15.0.5389.1000
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40486
- 2026-10-03 Alias added: GHSA-f354-fqf2-9hm4
References
More Microsoft Office vulnerabilities
- TI-2023-09240 Microsoft Outlook Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2019-01013 A remote code execution vulnerability exists in Microsoft Excel software when the… KEVCVSS 3.1HIGH 8.8
- TI-2019-00335 Command injection in Microsoft Office KEVCVSS 3.1HIGH 8.8
- TI-2018-00739 Out-of-bounds write in Microsoft Equation Editor KEVCVSS 3.1HIGH 8.8
- TI-2015-02130 Microsoft PowerPoint 2007 SP3, Word 2007 SP3, PowerPoint 2010 SP2, Word 2010 SP2… KEVCVSS 3.1HIGH 8.8
- TI-2015-01588 Microsoft Office 2013 SP1 and 2013 RT SP1 allows remote attackers to execute arbitrary… KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2021-40486 · CVE Program
- CVE-2021-40486 · NVD
- FIRST EPSS
- GHSA-f354-fqf2-9hm4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences