Detections
Analytics
Security Updates for Microsoft Exchange Server (August 2025)
high Nessus Plugin ID 249140
Language:
Synopsis
The Microsoft Exchange Server installed on the remote host is affected by multiple vulnerabilities.Description
The Microsoft Exchange Server installed on the remote host is missing a security update. It is, therefore, affected by multiple vulnerabilities as referenced in the August, 2025 security bulletin.- Exposure of sensitive information to an unauthorized actor in Microsoft Exchange Server allows an unauthorized attacker to disclose information over a network. (CVE-2025-33051)
- Improper input validation in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network. (CVE-2025-25005)
- Improper handling of additional special element in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. (CVE-2025-25006)
- Improper validation of syntactic correctness of input in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. (CVE-2025-25007)
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 the following security updates to address this issue:-KB5063221
-KB5063222
-KB5063223
See Also
http://www.nessus.org/u?ca5a35e4
Plugin Details
Severity: High
ID: 249140
File Name: smb_nt_ms25_aug_exchange.nasl
Version: 1.4
Type: local
Agent: windows
Family: Windows : Microsoft Bulletins
Published: 8/12/2025
Updated: 9/26/2025
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2025-33051
CVSS v3
Risk Factor: High
Base Score: 8
Temporal Score: 7.2
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2025-33051
Vulnerability Information
CPE: cpe:/a:microsoft:exchange_server:2019, cpe:/a:microsoft:exchange_server:2016
Required KB Items: SMB/MS_Bulletin_Checks/Possible
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/12/2025
Vulnerability Publication Date: 8/6/2025
Reference Information
CVE: CVE-2025-25005, CVE-2025-25006, CVE-2025-25007, CVE-2025-33051