Microsoft SharePoint Online vulnerabilities

2 CVEs affecting Microsoft SharePoint Online, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-70332, published 2026-08-07.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2025-59245, published 2025-11-20. Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days. Microsoft SharePoint Online Elevation of Privilege Vulnerability
• CVE-2026-70332, published 2026-08-07. Critical severity, CVSS 9.6. EPSS: 0.9% chance of exploitation in the next 30 days. Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.