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CVE-2025-59245: Microsoft SharePoint Online Elevation of Privilege Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-20 · updated 2026-10-18
• Weakness: CWE-502

Description

Microsoft SharePoint Online Elevation of Privilege Vulnerability

Affected products

• Microsoft SharePoint Online: all versions
• Microsoft SharePoint Online: all versions

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59245

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