Detections
Analytics
Security Updates for Microsoft SharePoint Server Subscription Edition (November 2026)
critical Nessus Plugin ID 378494
Synopsis
The Microsoft SharePoint Server Subscription Edition installation on the remote host is affected by multiple vulnerabilities.Description
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-2026-109454, CVE-2026-109456, CVE-2026-109497, CVE-2026-109504, CVE-2026-110045, CVE-2026-110065, CVE-2026-111297, CVE-2026-111300, CVE-2026-111303)
- Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network. (CVE-2026-109464, CVE-2026-109472, CVE-2026-110044, CVE-2026-120000, CVE-2026-123390)
- Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. (CVE-2026-109495, CVE-2026-88176)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Apply Security Update 5002945See Also
Plugin Details
Severity: Critical
ID: 378494
File Name: smb_nt_ms26_nov_office_sharepoint_subscr.nasl
Version: 1.1
Type: Local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 11/10/2026
Updated: 11/10/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5
Percentile: 92.8
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-2026-109454
CVSS v3
Risk Factor: Critical
Base Score: 9
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Vulnerability Information
CPE: cpe:/a:microsoft:sharepoint_server:subscription
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Patch Publication Date: 11/10/2026
Vulnerability Publication Date: 11/10/2026
Reference Information
CVE: CVE-2026-109454, CVE-2026-109455, CVE-2026-109456, CVE-2026-109464, CVE-2026-109466, CVE-2026-109472, CVE-2026-109495, CVE-2026-109497, CVE-2026-109499, CVE-2026-109502, CVE-2026-109504, CVE-2026-110044, CVE-2026-110045, CVE-2026-110057, CVE-2026-110065, CVE-2026-111296, CVE-2026-111297, CVE-2026-111300, CVE-2026-111303, CVE-2026-112736, CVE-2026-120000, CVE-2026-120002, CVE-2026-123390, CVE-2026-123391, CVE-2026-124210, CVE-2026-80095, CVE-2026-88176