CVE-2026-32201

Microsoft SharePoint Server Improper Input Validation Vulnerability

Microsoft — SharePoint Server

Added to KEV catalog: 14 April 2026
Federal remediation due date: 28 April 2026
Weakness classification (CWE): CWE-20

CISA Description

Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.

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.

Notes

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-32201 ; https://nvd.nist.gov/vuln/detail/CVE-2026-32201

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