Main Vulnerability Database Vulnerabilities #VU117029

Improper authentication in Microsoft Exchange Server - CVE-2025-53782

Published: October 14, 2025

Vulnerability identifier: #VU117029

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2025-53782

CWE-ID: CWE-287

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Microsoft

Affected software:
Microsoft Exchange Server

Detailed vulnerability description

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to incorrect implementation of authentication process. A local user can execute arbitrary code with elevated privileges.

Install updates from vendor's website.