On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these changes in the general interest of improving the security of hybrid Exchange deployments. Following further investigation, Microsoft identified specific security implications tied to the guidance and configuration steps outlined in the April announcement. Microsoft is issuing CVE-2025-53786 to document a vulnerability that is addressed by taking the steps documented with the April 18th announcement. Microsoft strongly recommends reading the information, installing the April 2025 (or later) Hot Fix and implementing the changes in your Exchange Server and hybrid environment.
History

Thu, 07 Aug 2025 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft exchange
Microsoft exchange Server
Vendors & Products Microsoft
Microsoft exchange
Microsoft exchange Server

Wed, 06 Aug 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 06 Aug 2025 16:15:00 +0000

Type Values Removed Values Added
Description On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these changes in the general interest of improving the security of hybrid Exchange deployments. Following further investigation, Microsoft identified specific security implications tied to the guidance and configuration steps outlined in the April announcement. Microsoft is issuing CVE-2025-53786 to document a vulnerability that is addressed by taking the steps documented with the April 18th announcement. Microsoft strongly recommends reading the information, installing the April 2025 (or later) Hot Fix and implementing the changes in your Exchange Server and hybrid environment.
Title Microsoft Exchange Server Hybrid Deployment Elevation of Privilege Vulnerability
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2025-08-06T16:02:05.764Z

Updated: 2025-08-07T21:01:00.425Z

Reserved: 2025-07-09T13:40:07.624Z

Link: CVE-2025-53786

cve-icon Vulnrichment

Updated: 2025-08-06T16:26:54.428Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-06T16:15:30.700

Modified: 2025-08-06T20:23:37.600

Link: CVE-2025-53786

cve-icon Redhat

No data.