Security Updates for Microsoft SharePoint Server Subscription Edition (July 2025)

critical Nessus Plugin ID 242415

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 security vulnerabilities:

- Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network. (CVE-2025-53771)

- Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. (CVE-2025-53770)

Solution

Microsoft has released KB5002768 to address this issue.

See Also

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771

https://www.microsoft.com/en-us/download/details.aspx?id=108285

Plugin Details

Severity: Critical

ID: 242415

File Name: smb_nt_ms25_jul_office_sharepoint_subscr_CVE-2025-53770.nasl

Version: 1.2

Type: local

Agent: windows

Published: 7/20/2025

Updated: 7/21/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

Vulnerability Information

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

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/20/2025

Vulnerability Publication Date: 7/20/2025

CISA Known Exploited Vulnerability Due Dates: 7/21/2025

Reference Information

CVE: CVE-2025-53770, CVE-2025-53771

MSFT: MS25-5002768

MSKB: 5002768