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TI-2025-33672 Aliases CVE-2025-53771GHSA-6pmq-337c-gv96

Microsoft SharePoint Server Spoofing Vulnerability

Priority HIGH 80CWE-287Published · 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 authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.9989 99th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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 16.0.5513.100116.0.5513.1001Patch availableCNA
MicrosoftMicrosoft SharePoint Server 201916.0.0 to before 16.0.10417.2003716.0.10417.20037Patch availableCNA
MicrosoftMicrosoft SharePoint Server Subscription Edition16.0.0 to before 16.0.18526.2050816.0.18526.20508Patch availableCNA
  • Microsoft SharePoint Enterprise Server 2016 VendorMicrosoft Affected 16.0.0 to before 16.0.5513.1001 Fixed in 16.0.5513.1001 Patch available CNA
  • Microsoft SharePoint Server 2019 VendorMicrosoft Affected 16.0.0 to before 16.0.10417.20037 Fixed in 16.0.10417.20037 Patch available CNA
  • Microsoft SharePoint Server Subscription Edition VendorMicrosoft Affected 16.0.0 to before 16.0.18526.20508 Fixed in 16.0.18526.20508 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*before 16.0.18526.20508VulnerableMicrosoft
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 16.0.18526.20508 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

  • KB5002760
    Security Update
    • Microsoft SharePoint Enterprise Server 2016 16.0.5513.1001
  • KB5002759
    Security Update
    • Microsoft SharePoint Enterprise Server 2016 16.0.5513.1001
  • KB5002753
    Security Update
    • Microsoft SharePoint Server 2019 16.0.10417.20037

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft SharePoint Server 2019Fixed 16.0.10417.20037 · Security Update
Microsoft SharePoint Server Subscription EditionFixed 16.0.18526.20508 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-53771
  2. 2026-10-03 Alias added: GHSA-6pmq-337c-gv96

References

Patch 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