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

The Microsoft SharePoint 2019 Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - Remote Code Execution     (CVE-2026-33112, CVE-2026-33110, CVE-2026-35439,     CVE-2026-40357, CVE-2026-40365, CVE-2026-40367, CVE-2026-40368)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft SharePoint 2016 Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - Remote Code Execution     (CVE-2026-33112, CVE-2026-33110, CVE-2026-35439,     CVE-2026-40357, CVE-2026-40365, CVE-2026-40367,     CVE-2026-40368)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Microsoft SharePoint Server Subscription Edition installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - Remote Code Execution   (CVE-2026-33112, CVE-2026-33110, CVE-2026-35439,   CVE-2026-40357, CVE-2026-40368)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
314345	Security Updates for Microsoft SharePoint Server 2019 (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314344	Security Updates for Microsoft SharePoint Server 2016 (May 2026)	Nessus	Windows : Microsoft Bulletins	high
314338	Security Updates for Microsoft SharePoint Server Subscription Edition (May 2026)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2026-40357

high

Tenable Plugins

high

high

high