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CVE-2025-53771

MediumPublished

Microsoft SharePoint Server Spoofing Vulnerability

Published: Jul 20, 2025
Updated: Feb 13, 2026
Assigning CNA: microsoft
Evidence observed: Aug 8, 2026

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

99.8%

High · next 30 days

Percentile: 100.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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

Sources

OurSharePoint-CVE-2025-53770Exploit
Do you really think SharePoint is safe?
CVE-2025-53770PoC
CVE-2025-53770 - SharePoint
CVE-2025-53770Exploit
Proof-of-concept exploit toolkit for SharePoint ToolPane RCE (CVE-2025-53770) with scanner, payload analysis, and multiple exploitation methods for authorized security testing.

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