Input validation error in Microsoft Exchange Server - CVE-2025-59248
Published: October 14, 2025
Vulnerability identifier: #VU117030
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-59248
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can perform spoofing attack and gain access to sensitive information.
Affected software
Microsoft Exchange Server
How to mitigate CVE-2025-59248
Install updates from vendor's website.
Microsoft Exchange Server - addressed in versions SE RTM Oct25SU 15.02.2562.029, 2016 CU23 Oct25SU 15.01.2507.061, 2019 CU14 Oct25SU 15.02.1544.036, 2019 CU15 Oct25SU 15.02.1748.039