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Microsoft Security Response CenterCVE-2026-54108

Microsoft SharePoint Server Spoofing Vulnerability

HighVendor CVSS 6.5 / 10 1 CVE Published Jul 14, 2026 at 7:00 AM UTC

Summary

External control of file name or path in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Products covered

  • Microsoft SharePoint Enterprise Server 2016

  • Microsoft SharePoint Server 2019

  • Microsoft SharePoint Server Subscription Edition

Remediation

Install KB5002891. Install KB5002883. Install KB5002882.

Vendor-listed fixes

  • 16.0.5561.1001

  • 16.0.10417.20175

  • 16.0.19725.20434

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.