CVE-2026-32201

Microsoft SharePoint Server Spoofing Vulnerability

CVE-2026-32201 is fixed in 3 products on 1 platform, first by KB5002861, released April 14, 2026. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on April 14, 2026. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

6.5

Important

Exploitation

Exploited

Reported by the vendor

CISA KEV

Apr 14, 2026

Federal due date Apr 28, 2026

EPSS

0.4338

98th percentile

<p>Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft SharePoint Enterprise Server 2016	KB5002861	Apr 14, 2026
Microsoft SharePoint Server 2019	KB5002854	Apr 14, 2026
Microsoft SharePoint Server Subscription Edition	KB5002853	Apr 14, 2026

Details

Published
April 14, 2026
Weakness
Improper Input Validation
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32201

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