CVE-2026-65663: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

PriorityP262high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

2.04%

81.1th percentile

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
microsoft	microsoft_sharepoint_enterprise_server_2016	>= 16.0.0 < 16.0.5565.1001	16.0.5565.1001
microsoft	microsoft_sharepoint_server_2019	>= 16.0.0 < 16.0.10417.20198	16.0.10417.20198
microsoft	microsoft_sharepoint_server_subscription_edition	>= 16.0.0 < 16.0.19725.20522	16.0.19725.20522
microsoft	sharepoint_server	< 16.0.19725.20522	16.0.19725.20522
microsoft	sharepoint_server	—	—
microsoft	sharepoint_server	—	—

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