Microsoft SharePoint Server Improper Input Validation Vulnerability (CVE-2026-32201)
Severity: medium · Patch status: unknown · Since 2026-04-14 · CVE-2026-32201
Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network. CISA added CVE-2026-32201 to its Known Exploited Vulnerabilities catalog on Apr 14, 2026, which means attackers are exploiting it in the wild.
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.
- US federal agencies must remediate by Apr 28, 2026 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
