What’s Vulnerable › Vulnerabilities

CVE-2025-64672: Microsoft SharePoint Server Spoofing Vulnerability

• Severity: critical (CVSS 9.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-09 · updated 2026-10-14
• Weakness: CWE-79

Description

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.

Affected products

• Microsoft SharePoint Server: before 16.0.19127.20378 — fixed in 16.0.19127.20378
• Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.19127.20378 — fixed in 16.0.19127.20378

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server 16.0.19127.20378; Microsoft SharePoint Server Subscription Edition 16.0.19127.20378. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64672

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