A critical Windows Netlogon vulnerability is being actively exploited by threat actors, according to a warning from the Centre for Cybersecurity Belgium. This remote code execution flaw, which was recently patched by Microsoft, allows attackers to execute arbitrary code on vulnerable systems. The vulnerability is particularly concerning due to its potential for widespread exploitation, as it can be triggered by a specially crafted Netlogon message1. As a result, Windows systems that have not been updated with the latest patch are at risk of being compromised. The fact that threat actors are already exploiting this vulnerability in attacks underscores the importance of prompt patching and highlights the need for organizations to prioritize vulnerability management. This exploitation matters to security practitioners because it can lead to unauthorized access and lateral movement within a network, making it essential to apply the patch as soon as possible.