Disclosure summary
Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.
CISA remediation guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
CERT-EU Security Advisories · RSS-58275f01b5d12802890b325fa6af0049f53
Open original source · Updated Jul 23, 2026
2026-009: Critical Vulnerabilities in Microsoft SharePoint
CVE mention in publisher metadata; check the original affected versions.
Original records & references
PUBLISHED 2026-04-14T00:00:00-04:00
MODIFIED 2026-04-14T00:00:00-04:00
INGESTED 2026-10-06T11:42:57-04:00