CVE-2026-102866: high-severity vulnerability in Microsoft SharePoint Server Subscription Edition
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Published
18Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1
exploitation probability
—
observed exploitation
nono source reports it
Improper verification of cryptographic signature in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft SharePoint Server Subscription EditionRelated CVEs — Microsoft SharePoint Server Subscription Edition
In the same product, most dangerous first.
CVE-2025-53770CRITICALMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 100.0%KEVCVE-2025-49706MEDIUMMicrosoft SharePoint Server Spoofing VulnerabilityEPSS 99.1%KEVCVE-2023-24955HIGHMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 85.0%KEVCVE-2026-55040CRITICALMicrosoft SharePoint Server Security Feature Bypass VulnerabilityEPSS 69.5%KEVCVE-2024-38094HIGHMicrosoft SharePoint Remote Code Execution VulnerabilityEPSS 50.9%KEVCVE-2026-32201MEDIUMMicrosoft SharePoint Server Spoofing VulnerabilityEPSS 43.4%KEV