Detections
Analytics
Security Updates for Microsoft SharePoint Server 2019 (August 2026)
high Nessus Plugin ID 334613
Synopsis
The Microsoft SharePoint Server 2019 installation on the remote host is affected by multiple vulnerabilities.Description
The Microsoft SharePoint Server 2019 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:- Improper authentication in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. (CVE-2026-62827)
- Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. (CVE-2026-64921)
- Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network. (CVE-2026-65665)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Microsoft has released the following security updates to address this issue:- Update to version 16.0.10417.20198
See Also
Plugin Details
Severity: High
ID: 334613
File Name: smb_nt_ms26_aug_office_sharepoint_2019.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 8/11/2026
Updated: 8/11/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
CVSS v2
Risk Factor: High
Base Score: 9
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-65665
CVSS v3
Risk Factor: High
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:sharepoint_server:2019
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Patch Publication Date: 8/11/2026
Vulnerability Publication Date: 8/11/2026
Reference Information
CVE: CVE-2026-57105, CVE-2026-58639, CVE-2026-62827, CVE-2026-62829, CVE-2026-62837, CVE-2026-62839, CVE-2026-62917, CVE-2026-63512, CVE-2026-63514, CVE-2026-63516, CVE-2026-63520, CVE-2026-64897, CVE-2026-64900, CVE-2026-64901, CVE-2026-64902, CVE-2026-64916, CVE-2026-64921, CVE-2026-64922, CVE-2026-65658, CVE-2026-65660, CVE-2026-65663, CVE-2026-65665, CVE-2026-66805, CVE-2026-66808, CVE-2026-70324, CVE-2026-70355