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TI-2026-24733 Aliases CVE-2026-32201GHSA-jmj9-qm9w-hrqj

Microsoft SharePoint Server Spoofing Vulnerability

Priority CRITICAL 86Exploited in the wildCWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Why it matters now

Exploitation Active In CISA KEV since 2026-04-14CISA due date 2026-04-28
EPSS 0.43378 98th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Partial

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 201616.0.0 to before 16.0.5548.100316.0.5548.1003Patch availableCNA
MicrosoftMicrosoft SharePoint Server 201916.0.0 to before 16.0.10417.2011416.0.10417.20114Patch availableCNA
MicrosoftMicrosoft SharePoint Server Subscription Edition16.0.0 to before 16.0.19725.2021016.0.19725.20210Patch availableCNA
  • Microsoft SharePoint Enterprise Server 2016 VendorMicrosoft Affected 16.0.0 to before 16.0.5548.1003 Fixed in 16.0.5548.1003 Patch available CNA
  • Microsoft SharePoint Server 2019 VendorMicrosoft Affected 16.0.0 to before 16.0.10417.20114 Fixed in 16.0.10417.20114 Patch available CNA
  • Microsoft SharePoint Server Subscription Edition VendorMicrosoft Affected 16.0.0 to before 16.0.19725.20210 Fixed in 16.0.19725.20210 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*before 16.0.19725.20210VulnerableMicrosoft
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*2016VulnerableMicrosoft
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*2019VulnerableMicrosoft
  • cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* Versions before 16.0.19725.20210 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:* Versions 2016 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* Versions 2019 Vulnerable ·Microsoft

Remediation

Microsoft 3 updates

  • KB5002861
    Security Update
    • Microsoft SharePoint Enterprise Server 2016 16.0.5548.1003
  • KB5002854
    Security Update
    • Microsoft SharePoint Server 2019 16.0.10417.20114
  • KB5002853
    Security Update
    • Microsoft SharePoint Server Subscription Edition 16.0.19725.20210

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
Yes
Publicly disclosed
No
Exploitability
Exploitation Detected

Timeline

  1. 2026-04-14 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2026-32201
  3. 2026-10-03 Alias added: GHSA-jmj9-qm9w-hrqj

References

Patch 1

Advisory 1

  • TI-2026-42212 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-37256 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-16982 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-33671 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-13749 Microsoft SharePoint Server Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-00394 Improper input validation in Microsoft SharePoint Server KEVCVSS 3.1CRITICAL 9.8
See all 631 →

Sources

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