What is CVE-2026-45483?

CVE-2026-45483 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Office Project Server Spoofing Vulnerability

Which CVE IDs does CVE-2026-45483 cover?

CVE-2026-45483 covers the following CVE IDs: CVE-2026-45483. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-45483?

CVE-2026-45483 has a CVSS v3 base score of 4.6, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-45483?

CVE-2026-45483 affects 3 products, including: Microsoft SharePoint Enterprise Server 2016; Microsoft SharePoint Server 2019; Microsoft SharePoint Server Subscription Edition.

CVE-2026-45483HighCVSS 4.6

Microsoft Office Project Server Spoofing Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-45483 →

📋 Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office Project Server allows an authorized attacker to perform spoofing over a network.

🎯 Affected products3

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

✅ Remediation

KB5002873 (Security Update) — fixed build 16.0.19725.20384 KB5002880 (Security Update) — fixed build 16.0.5556.1005 KB5002874 (Security Update) — fixed build 16.0.10417.20153

🔗 References (7)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45483
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108692
referencehttps://support.microsoft.com/help/5002873
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108696
referencehttps://support.microsoft.com/help/5002880
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108694
referencehttps://support.microsoft.com/help/5002874