CVE-2026-32201 — Microsoft SharePoint Server Improper Input Validation Vulnerability
CVE-2026-32201: Microsoft SharePoint Server Improper Input Validation Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | SharePoint Server |
| Date added | 2026-04-14 |
| Due date | 2026-04-28 |
| Ransomware campaign use | Unknown |
Description
Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.
Required action (CISA)
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
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-32201
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog