CVE-2025-24064: 
vulnerability analysis and mitigation

CVE-2025-24064 is a Critical Remote Code Execution (RCE) vulnerability affecting the Windows Domain Name Service (DNS) that was disclosed in Microsoft's March 2025 Patch Tuesday update. The vulnerability has been assigned a CVSS score of 8.1 and affects all supported Windows servers and workstations running DNS services (CrowdStrike Blog, Talos Blog).

The vulnerability is caused by a Use-After-Free (UAF) condition in the DNS Server. To successfully exploit this vulnerability, an attacker must win a race condition with the target DNS server's dynamic DNS update message. The vulnerability has been assigned a CVSS 3.1 score of 8.1 and is considered "less likely to be exploited" by Microsoft (Talos Blog, NVD).

The relative importance of DNS servers to an organization's infrastructure makes this vulnerability particularly concerning. If successfully exploited, the vulnerability could allow an unauthorized attacker to execute code over a network. Additionally, information held on the DNS server can be used by an adversary to gain critical information about the layout of an organization's internal infrastructure (CrowdStrike Blog).

Microsoft has released security patches as part of its March 2025 Patch Tuesday update to address this vulnerability. Organizations are advised to patch this vulnerability quickly due to the critical nature of DNS services to organizational infrastructure (CrowdStrike Blog).

The SANS Institute has assessed CVE-2025-24064 as noteworthy, particularly highlighting that many Windows DNS servers support dynamic updates. They note that it remains unclear if servers with dynamic updates disabled are also vulnerable to exploitation (Dark Reading).