Microsoft SharePoint Server Spoofing Vulnerability
CVE-2025-64672 is a high-severity Microsoft Office SharePoint vulnerability caused by improper neutralization of input during web page generation, i.e., a cross-site scripting (XSS) flaw. According to the provided content, the issue affects Microsoft Office SharePoint and allows an authorized attacker to perform spoofing over a network. The vulnerability is identified by Microsoft as a SharePoint Server spoofing vulnerability and is mapped to CWE-79. No additional technical detail about the specific vulnerable function, parameter, page, or whether the XSS is reflected, stored, or DOM-based is provided in the supplied material.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft SharePoint (Microsoft Office SharePoint) cross-site scripting (CWE-79) issue that enables an authorized attacker to perform spoofing over the network.
A high-severity vulnerability in Microsoft Office SharePoint with a CVSS score of 8.8.
Specific Microsoft vulnerability affecting Microsoft Office SharePoint listed in the December 2025 Security Updates.
A Microsoft December 2025 security update vulnerability affecting Microsoft Office SharePoint.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.