Microsoft SharePoint Server Spoofing Vulnerability
Priority LOW 38CWE-290Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-290.
Summary
Microsoft SharePoint Server Spoofing Vulnerability
Why it matters now
EPSS 0.01602 75th percentileScored 2026-11-07
Fix Fixed Microsoft SharePoint Enterprise Server 2016 (Microsoft): 16.0.5254.1000Microsoft SharePoint Server 2019 (Microsoft): 16.0.10381.20001+1 more product
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 16.0.5254.1000 | 16.0.5254.1000 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 to before 16.0.10381.20001 | 16.0.10381.20001 | Patch available | CNA |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 to before 16.0.14326.20620 | 16.0.14326.20620 | Patch available | CNA |
- Microsoft SharePoint Enterprise Server 2016 VendorMicrosoft Affected 16.0.0 to before 16.0.5254.1000 Fixed in 16.0.5254.1000 Patch available CNA
- Microsoft SharePoint Server 2019 VendorMicrosoft Affected 16.0.0 to before 16.0.10381.20001 Fixed in 16.0.10381.20001 Patch available CNA
- Microsoft SharePoint Server Subscription Edition VendorMicrosoft Affected 16.0.0 to before 16.0.14326.20620 Fixed in 16.0.14326.20620 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:* | 2016 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* | 2019 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:* Versions 2016 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft
Remediation
- Fix · CNA Microsoft SharePoint Enterprise Server 2016 (Microsoft) Fixed in 16.0.5254.1000
- Fix · CNA Microsoft SharePoint Server 2019 (Microsoft) Fixed in 16.0.10381.20001
- Fix · CNA Microsoft SharePoint Server Subscription Edition (Microsoft) Fixed in 16.0.14326.20620
Timeline
- 2026-10-02 Threatist record created from CVE-2021-42320
- 2026-10-03 Alias added: GHSA-7f8g-xqpj-293g
More Microsoft Sharepoint Enterprise Server vulnerabilities
- TI-2019-00394 Improper input validation in Microsoft SharePoint Server KEVCVSS 3.1CRITICAL 9.8
- TI-2020-01112 A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and… KEVCVSS 3.1HIGH 7.8
- TI-2017-08774 Memory corruption in Microsoft Office KEVCVSS 3.1HIGH 7.8
- TI-2023-10439 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 7.2
- TI-2023-08100 Microsoft Word Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-31676 Microsoft SharePoint Server Spoofing Vulnerability KEVCVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-42320 · CVE Program
- CVE-2021-42320 · NVD
- FIRST EPSS
- GHSA-7f8g-xqpj-293g · 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