Detections
Analytics

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

high Nessus Plugin ID 314338

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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 (CVE-2026-33112, CVE-2026-33110, CVE-2026-35439, CVE-2026-40357, CVE-2026-40368, CVE-2026-45659)

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 security updates to address this issue.

See Also

https://support.microsoft.com/help/5002863

Plugin Details

Severity: High

ID: 314338

File Name: smb_nt_ms26_may_office_sharepoint_subscr.nasl

Version: 1.4

Type: Local

Agent: windows

Published: 5/12/2026

Updated: 5/29/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-40368

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-40357

Vulnerability Information

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

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-33110, CVE-2026-33112, CVE-2026-35439, CVE-2026-40357, CVE-2026-40368, CVE-2026-45659

IAVA: 2026-A-0461, 2026-A-0508

MSFT: MS26-5002863

MSKB: 5002863