Security Updates for Microsoft SharePoint Server Subscription Edition (March 2026)

high Nessus Plugin ID 301775

Synopsis

The Microsoft SharePoint Server Subscription Edition installation on the remote host is missing a security update.

Description

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 vulnerabilities (CVE-2026-26106, CVE-2026-26113)

- Spoofing vulnerability in Microsoft SharePoint Server Subscription Edition (CVE-2026-26105)

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

Solution

Microsoft has released security updates to address this issue.

Plugin Details

Severity: High

ID: 301775

File Name: smb_nt_ms26_mar_office_sharepoint_subscr.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows : Microsoft Bulletins

Published: 3/10/2026

Updated: 3/10/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-26105

CVSS v3

Risk Factor: High

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS Score Source: CVE-2026-26113

Vulnerability Information

CPE: cpe:/a:microsoft:sharepoint_server:subscription

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 3/10/2026

Vulnerability Publication Date: 3/10/2026

Reference Information

CVE: CVE-2026-26105, CVE-2026-26106, CVE-2026-26113

MSFT: MS26-5002843

MSKB: 5002843

Detections

Analytics