Security Updates for Microsoft SharePoint Server 2019 (December 2025)

critical Nessus Plugin ID 277993

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:

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2025-62555, CVE-2025-62558, CVE-2025-62559, CVE-2025-62562)

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.

See Also

https://support.microsoft.com/en-us/help/5002816

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62555

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62558

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62559

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62562

Plugin Details

Severity: Critical

ID: 277993

File Name: smb_nt_ms25_dec_office_sharepoint_2019.nasl

Version: 1.2

Type: local

Agent: windows

Published: 12/9/2025

Updated: 12/12/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2025-62555

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 12/9/2025

Vulnerability Publication Date: 12/9/2025

Reference Information

CVE: CVE-2025-62555, CVE-2025-62558, CVE-2025-62559, CVE-2025-62562

IAVA: 2025-A-0915

MSFT: MS25-5002816

MSKB: 5002816