Microsoft SharePoint Server Subscription Edition vulnerabilities

2 CVEs affecting Microsoft SharePoint Server Subscription Edition, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-108452, published 2026-10-15.

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

• CVE-2026-88164, published 2026-10-14. High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days. Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
• CVE-2026-108452, published 2026-10-15. High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days. Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.