CVE-2025-53771

Microsoft SharePoint Server Spoofing Vulnerability

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

Affected

Microsoft · Microsoft SharePoint Enterprise Server 2016 · Microsoft SharePoint Server 2019 · Microsoft SharePoint Server Subscription Edition

CVSS v3.1 MICROSOFT

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS

99.86% chance of exploitation in the next 30 days, 100th percentile

Nuclei

medium · CWE-287

Published

2025-07-20

Updated

2026-02-13

Proof-of-concept exploits (3)

• Salehswt/SharePoint-CVEs-Hunter0★ · 2025-07-22
• saladin0x1/CVE-2025-537704★ · 2025-09-04
• unk9vvn/sharepoint-toolpane6★ · 2025-07-26

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-53771.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sharepoint_toolpane…

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771

References

• CVE Record
• NVD entry

Related

• CVE-2025-49704
• CVE-2025-49706
• CVE-2025-53770