What is CVE-2025-64672?

CVE-2025-64672 is a high-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-12-09.

How severe is CVE-2025-64672?

High severity. CVSS v3 base score is 8.8 out of 10.

XSS in Microsoft Sharepoint Server Subscription Edition

CVE-2025-64672

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

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft Sharepoint Server Subscription Edition — versions 16.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Microsoft SharePoint Server Spoofing Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-64672?: CVE-2025-64672 is a high-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2025-12-09.
How severe is CVE-2025-64672?: High severity. CVSS v3 base score is 8.8 out of 10.