Product:
Microsoft Exchange Server
Summary
Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. This vulnerability can lead to significant security risks if exploited. Attackers can gain unauthorized access to sensitive information and perform actions with elevated privileges.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.5 | CVE-2025-64666 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access to the network where Microsoft Exchange Server is deployed. By sending specially crafted input to the server, the attacker can manipulate the input validation process, allowing them to elevate their privileges and gain unauthorized access to system resources.
Affected Products
- Microsoft Exchange Server: Vulnerable to improper input validation, allowing privilege escalation.
Mitigation
To mitigate this vulnerability, it is essential to apply the latest security updates provided by Microsoft. Regularly monitoring and auditing access to the Exchange Server can also help identify and prevent unauthorized access attempts. Implementing strict access controls and user permissions will further reduce the risk of exploitation.