ACTIVELY EXPLOITED

CVE-2026-32201: Microsoft SharePoint Server Improper Input Validation Vulnerability

Facts
VendorMicrosoft
ProductSharePoint Server
Actively exploitedYes
Added to CISA KEV14 Apr 2026
CISA federal deadline28 Apr 2026
Weakness (CWE)CWE-20

Required action (CISA's text)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Description (NVD)

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

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.