Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

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

  - Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office     SharePoint allows an authorized attacker to perform spoofing over a network.
    (CVE-2026-33113)

  - Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
    (CVE-2026-44819)

  - Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
    (CVE-2026-44821)

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

  - Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office     SharePoint allows an authorized attacker to perform spoofing over a network.     (CVE-2026-33113)

  - Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
    (CVE-2026-44819)

  - Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
    (CVE-2026-44821)

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
320194	Security Updates for Microsoft SharePoint Server Subscription Edition (June 2026)	Nessus	Windows : Microsoft Bulletins	high
320192	Security Updates for Microsoft SharePoint Server 2019 (June 2026)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2026-47634

high

Tenable Plugins

high

high