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CVE-2026-33112: SharePoint XmlValidator Bypass Enables Low-Privilege RCE

blog.viettelcybersecurity.com | 漏洞 | CVE-2026-33112 | #rce | #deserialization | #sharepoint | #xml | #cve-2026-33112 | #performancepoint

摘要

CVE-2026-33112：通过 XSD schema 网络导入绕过 SharePoint XmlValidator 校验，再经 PerformancePoint PPSAuthoringService 触发 ExcelDataSet 反序列化，实现低权限 RCE。
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