Microsoft Word Remote Code Execution Vulnerability
Priority CRITICAL 90CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.
Summary
Microsoft Word Remote Code Execution Vulnerability
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.848 99th percentileScored 2026-11-07
Fix Fixed Microsoft: 10 updates
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 to before https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases | 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 2019 for Mac | 16.0.0 to before 16.70.23021201 | 16.70.23021201 | Patch available | CNA |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 to before https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases | Patch available | CNA |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 to before 16.70.23021201 | 16.70.23021201 | Patch available | CNA |
| Microsoft | Microsoft Office Online Server | 16.0.1 to before 16.0.10395.20001 | 16.0.10395.20001 | Patch available | CNA |
| Microsoft | Microsoft Office Web Apps Server 2013 Service Pack 1 | 15.0.1 to before 15.0.5529.1000 | 15.0.5529.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Enterprise Server 2013 Service Pack 1 | 15.0.0 to before 15.0.5529.1000 | 15.0.5529.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 to before 16.0.5383.1000 | 16.0.5383.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 | 15.0.0 to before 15.0.5529.1000 | 15.0.5529.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 to before 16.0.10395.20001 | 16.0.10395.20001 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 to before 16.0.15601.20478 | 16.0.15601.20478 | Patch available | CNA |
| Microsoft | Microsoft Word 2013 Service Pack 1 | 15.0.1 to before 15.0.5529.1000 | 15.0.5529.1000 | Patch available | CNA |
| Microsoft | Microsoft Word 2013 Service Pack 1 | 15.0.1 to before 15.0.5529.1000 | 15.0.5529.1000 | Patch available | CNA |
| Microsoft | Microsoft Word 2016 | 16.0.1 to before 16.0.5383.1000 | 16.0.5383.1000 | Patch available | CNA |
| Microsoft | SharePoint Server Subscription Edition Language Pack | 16.0.0 to before 16.0.15601.20478 | 16.0.15601.20478 | Patch available | CNA |
- Microsoft 365 Apps for Enterprise VendorMicrosoft Affected 16.0.1 to before https://aka.ms/OfficeSecurityReleases Fixed in https://aka.ms/OfficeSecurityReleases 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 2019 for Mac VendorMicrosoft Affected 16.0.0 to before 16.70.23021201 Fixed in 16.70.23021201 Patch available CNA
- Microsoft Office LTSC 2021 VendorMicrosoft Affected 16.0.1 to before https://aka.ms/OfficeSecurityReleases Fixed in https://aka.ms/OfficeSecurityReleases Patch available CNA
- Microsoft Office LTSC for Mac 2021 VendorMicrosoft Affected 16.0.1 to before 16.70.23021201 Fixed in 16.70.23021201 Patch available CNA
- Microsoft Office Online Server VendorMicrosoft Affected 16.0.1 to before 16.0.10395.20001 Fixed in 16.0.10395.20001 Patch available CNA
- Microsoft Office Web Apps Server 2013 Service Pack 1 VendorMicrosoft Affected 15.0.1 to before 15.0.5529.1000 Fixed in 15.0.5529.1000 Patch available CNA
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1 VendorMicrosoft Affected 15.0.0 to before 15.0.5529.1000 Fixed in 15.0.5529.1000 Patch available CNA
- Microsoft SharePoint Enterprise Server 2016 VendorMicrosoft Affected 16.0.0 to before 16.0.5383.1000 Fixed in 16.0.5383.1000 Patch available CNA
- Microsoft SharePoint Foundation 2013 Service Pack 1 VendorMicrosoft Affected 15.0.0 to before 15.0.5529.1000 Fixed in 15.0.5529.1000 Patch available CNA
- Microsoft SharePoint Server 2019 VendorMicrosoft Affected 16.0.0 to before 16.0.10395.20001 Fixed in 16.0.10395.20001 Patch available CNA
- Microsoft SharePoint Server Subscription Edition VendorMicrosoft Affected 16.0.0 to before 16.0.15601.20478 Fixed in 16.0.15601.20478 Patch available CNA
- Microsoft Word 2013 Service Pack 1 VendorMicrosoft Affected 15.0.1 to before 15.0.5529.1000 Fixed in 15.0.5529.1000 Patch available CNA
- Microsoft Word 2013 Service Pack 1 VendorMicrosoft Affected 15.0.1 to before 15.0.5529.1000 Fixed in 15.0.5529.1000 Patch available CNA
- Microsoft Word 2016 VendorMicrosoft Affected 16.0.1 to before 16.0.5383.1000 Fixed in 16.0.5383.1000 Patch available CNA
- SharePoint Server Subscription Edition Language Pack VendorMicrosoft Affected 16.0.0 to before 16.0.15601.20478 Fixed in 16.0.15601.20478 Patch available CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:* | 2019 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:* | 2021 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office_online_server:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:office_web_apps: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_foundation:2013:sp1:*:*:*:*:*:* | 2013 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_server:-:language_pack:*:*:subscription:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* | 2019 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:macos:*:* Versions 2019 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:* Versions 2021 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office_online_server:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:office_web_apps: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_foundation:2013:sp1:*:*:*:*:*:* Versions 2013 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_server:-:language_pack:*:*:subscription:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft
Remediation
Microsoft 10 updates
- Security Update
- Microsoft SharePoint Server Subscription Edition 16.0.15601.20478
- Security Update
- Microsoft SharePoint Server Subscription Edition 16.0.15601.20478
- SharePoint Server Subscription Edition Language Pack 16.0.15601.20478
- Security Update
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5529.1000
- Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.5529.1000
Show 7 more Microsoft updates
- Cumulative Update
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5529.1000
- Security Update
- Microsoft SharePoint Server 2019 16.0.10395.20001
- Security Update
- Microsoft SharePoint Server 2019 16.0.10395.20001
- Security Update
- Microsoft SharePoint Enterprise Server 2016 16.0.5383.1000
- Security Update
- Microsoft Word 2013 RT Service Pack 1 15.0.5529.1000
- Security Update
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5529.1000
- Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.5529.1000
- Security Update
- Microsoft Office Online Server 16.0.10395.20001
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Remote Code Execution
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Less Likely
| Product | Status | Plan or fix |
|---|---|---|
| Microsoft 365 Apps for Enterprise for 32-bit Systems | Fixed | https · //aka.ms/OfficeSecurityReleases |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | Fixed | https · //aka.ms/OfficeSecurityReleases |
| Microsoft Office 2019 for 32-bit editions | Fixed | https · //aka.ms/OfficeSecurityReleases |
| Microsoft Office 2019 for 64-bit editions | Fixed | https · //aka.ms/OfficeSecurityReleases |
| Microsoft Office 2019 for Mac | Fixed | 16.70.23021201 · Security Update |
| Microsoft Office LTSC 2021 for 32-bit editions | Fixed | https · //aka.ms/OfficeSecurityReleases |
| Microsoft Office LTSC 2021 for 64-bit editions | Fixed | https · //aka.ms/OfficeSecurityReleases |
| Microsoft Office LTSC for Mac 2021 | Fixed | 16.70.23021201 · Security Update |
| Microsoft Office Web Apps Server 2013 Service Pack 1 | Fixed | 15.0.5529.1000 · Security Update |
| Microsoft Word 2013 Service Pack 1 (32-bit editions) | Fixed | 15.0.5529.1000 · Security Update |
| Microsoft Word 2013 Service Pack 1 (64-bit editions) | Fixed | 15.0.5529.1000 · Security Update |
| Microsoft Word 2016 (32-bit edition) | Fixed | 16.0.5383.1000 · Security Update |
| Microsoft Word 2016 (64-bit edition) | Fixed | 16.0.5383.1000 · Security Update |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-21716
- 2026-10-03 Alias added: GHSA-64mm-8wcm-jw5g
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-2023-21716 · CVE Program
- CVE-2023-21716 · NVD
- FIRST EPSS
- GHSA-64mm-8wcm-jw5g · GitHub Advisory Database · CC BY 4.0
- CVE-2023-21716 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences