Microsoft SharePoint Server Improper Input Validation Vulnerability
Description
Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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Details
- Vendor
- Microsoft
- Product
- Microsoft SharePoint Server
- CVE
- CVE-2026-32201
- Affected versions
- Microsoft SharePoint Enterprise Server 2016 16.0: from 16.0.0 to 16.0.5548.1003 (excluded) — fixed in 16.0.5548.1003
Microsoft SharePoint Server 2019 16.0: from 16.0.0 to 16.0.10417.20114 (excluded) — fixed in 16.0.10417.20114
Microsoft SharePoint Server Subscription Edition 16.0: from 16.0.0 to 16.0.19725.20210 (excluded) — fixed in 16.0.19725.20210 (from the advisory and NVD; check the exact builds in the official advisory) - CVSS score
- 6.5
- Actively exploited
- Yes, listed in the CISA Known Exploited Vulnerabilities catalog
- CISA due date
- April 28, 2026 (deadline for US federal agencies: a good benchmark for you too)
- Source
- CISA KEV – original advisory
- Published
- April 14, 2026
The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.