CVE-2025-53786 | THREATINT

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.

Reserved 2025-07-09 | Published 2025-08-06 | Updated 2025-08-06 | Assigner microsoft

HIGH: 8.0CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-287: Improper Authentication

Product status

15.02.0.0 before 15.02.2562.017

affected

15.02.0 before 15.02.1748.024

affected

15.01.0 before 15.01.2507.055

affected

15.02.0.0 before 15.02.1544.025

affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53786 (Microsoft Exchange Server Hybrid Deployment Elevation of Privilege Vulnerability) vendor-advisory

cve.org (CVE-2025-53786)

nvd.nist.gov (CVE-2025-53786)

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