cve-2026-33113

CVE-2026-33113 is a Microsoft SharePoint Server spoofing vulnerability disclosed on June 9, 2026, in the Microsoft Security Update Guide. The vulnerability affects on-premises SharePoint installations, requiring administrators to apply the latest patch. Microsoft has provided limited technical details to prevent attacker exploitation, making this a routine but important patching event for SharePoint operators. Discussions on WindowsForum emphasize the need for patch discipline, exposure management, and careful assessment of spoofing vulnerabilities, rather than treating this as a critical zero-day. The tag covers the disclosure, impact on on-premises SharePoint, and recommended patching actions.