Security Updates for Microsoft Exchange Server (April 2025)

high Nessus Plugin ID 245204

Synopsis

The Microsoft Exchange Server installed on the remote host is affected by a vulnerability.

Description

The Microsoft Exchange Server installed on the remote host is missing a security update. It is, therefore, affected by a vulnerability as referenced in the April 2025 security bulletin.

- Microsoft Exchange Server Hybrid Deployment Elevation of Privilege Vulnerability (CVE-2025-53786)

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 the following security updates to address this issue:
-KB5047155
-KB5050672
-KB5050673
-KB5050674 Please note that Microsoft has reclassified the April 2025 as security update.

See Also

https://support.microsoft.com/help/5050673

Plugin Details

Severity: High

ID: 245204

File Name: smb_nt_ms25_apr_exchange.nasl

Version: 1.2

Type: local

Agent: windows

Published: 8/7/2025

Updated: 8/8/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 10.0

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

CVSS Score Source: CVE-2025-53786

CVSS v3

Risk Factor: High

Base Score: 8

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

Vulnerability Information

CPE: cpe:/a:microsoft:exchange_server:2016, cpe:/a:microsoft:exchange_server:2019

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 4/18/2025

Vulnerability Publication Date: 8/6/2025

Reference Information

CVE: CVE-2025-53786

IAVA: 2025-A-0562

MSFT: MS24-5047155, MS24-5050672, MS24-5050673, MS24-5050674

MSKB: 5047155, 5050672, 5050673, 5050674