CVE-2026-45648
Microsoft · Active Directory Domain Services
A stack-based buffer overflow in Active Directory Domain Services allows an authenticated attacker to execute arbitrary code over a network.
Executive summary
A high-severity stack-based buffer overflow in Active Directory Domain Services could allow an authenticated attacker to achieve remote code execution.
Vulnerability
This is a stack-based buffer overflow vulnerability within the Active Directory infrastructure. An authenticated attacker can leverage this flaw to send specifically crafted packets to the service, potentially resulting in remote code execution with elevated system privileges.
Business impact
Successful exploitation of this vulnerability could grant an attacker full control over the domain controller, leading to total compromise of the enterprise identity management system. Given the CVSS score of 8.8, the impact is severe, as it threatens the confidentiality, integrity, and availability of the entire network architecture.
Remediation
Immediate Action: Apply the relevant security updates provided by Microsoft as soon as they become available for the affected domain controllers.
Proactive Monitoring: Monitor system logs for unexpected service crashes or unusual memory patterns associated with AD services.
Compensating Controls: Restrict access to domain controllers to authorized personnel and utilize host-based intrusion detection systems to monitor for anomalous traffic patterns.
Exploitation status
Public Exploit Available: false
Analyst recommendation
Active Directory is the backbone of most corporate networks; therefore, any vulnerability affecting this service is of extreme importance. Administrators should prioritize the deployment of security patches to all domain controllers to prevent potential remote code execution and systemic compromise.