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TI-2023-08101 Aliases CVE-2023-21717GHSA-f7hr-c85m-f673

Microsoft SharePoint Server Elevation of Privilege Vulnerability

Priority MEDIUM 42CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
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 SharePoint Server Elevation of Privilege Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01095 65th percentileScored 2026-11-07
Fix Fixed Microsoft: 8 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft SharePoint Enterprise Server 2013 Service Pack 115.0.0 to before 15.0.5529.100015.0.5529.1000Patch availableCNA
MicrosoftMicrosoft SharePoint Enterprise Server 201616.0.0 to before 16.0.5383.100016.0.5383.1000Patch availableCNA
MicrosoftMicrosoft SharePoint Foundation 2013 Service Pack 115.0.0 to before 15.0.5529.100015.0.5529.1000Patch availableCNA
MicrosoftMicrosoft SharePoint Server 201916.0.0 to before 16.0.10395.2000116.0.10395.20001Patch availableCNA
MicrosoftMicrosoft SharePoint Server Subscription Edition16.0.0 to before 16.0.15601.2047816.0.15601.20478Patch availableCNA
  • 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

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2013:sp1:*:*:*:*:*:*2013 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*2016VulnerableMicrosoft
cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*2013 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*2019VulnerableMicrosoft
  • 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:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft

Remediation

Microsoft 8 updates

  • KB5002353
    Security Update
    • Microsoft SharePoint Server Subscription Edition 16.0.15601.20478
  • KB5002350
    Security Update
    • Microsoft SharePoint Enterprise Server 2016 16.0.5383.1000
  • KB5002347
    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 5 more Microsoft updates
  • KB5002346
    Cumulative Update
    • Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5529.1000
  • KB5002342
    Security Update
    • Microsoft SharePoint Server 2019 16.0.10395.20001
  • KB5002330
    Security Update
    • Microsoft SharePoint Server 2019 16.0.10395.20001
  • KB5002325
    Security Update
    • Microsoft SharePoint Enterprise Server 2016 16.0.5383.1000
  • KB5002312
    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

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-21717
  2. 2026-10-03 Alias added: GHSA-f7hr-c85m-f673

References

Patch 1

  • 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
See all 255 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences