CVE-2026-102866 — Microsoft Office SharePoint Elevation of Privilege Vulnerability

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

Published: 2026-10-13 · CVSS: 8.1 · CVSS 3.1

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

Original CVE JSON · STIX 2.1

Source: CVE Program · Revision b3c4bc369e1d7ee69235e352bacfbb449caf40a8