Vulnerability intelligence

CVE-2026-102866

Microsoft Microsoft SharePoint Server Subscription Edition CWE-347

Improper verification of cryptographic signature in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.

CVSS Score

8.1

High

EPSS — Exploit Probability

—

Awaiting FIRST.org data · checked 2026-10-13

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

Patch available

Vendor fix published

1 article across 1 outlet · first covered Oct 13, 2026 · latest Oct 13, 2026

Coverage timeline