Critical Windows Netlogon Vulnerability in Attackers’ Crosshairs

Organizations are advised to patch CVE-2026-41089 as soon as possible, given its severity, the potential ongoing exploitation. The post Critical Windows Netlogon Vulnerability in Attackers’ Crosshairs appeared first on SecurityWeek .

The article reports a critical Windows Netlogon vulnerability (CVE-2026-41089) under active or imminent exploitation, urging organizations to rapidly apply Microsoft patches to protect domain controllers and Active Directory infrastructure.[9] This class of Netlogon flaws, exemplified by prior issues like Zerologon (CVE-2020-1472), can allow unauthenticated attackers with network access to gain domain admin privileges and fully compromise identity services that many downstream applications and services rely on.[1][6] From a CyberSE.AI perspective, any compromise of Windows domain controllers or identity infrastructure directly undermines the integrity of AI systems’ authentication, authorization, and logging, representing an AI supply chain risk where upstream platform vulnerabilities can be leveraged to hijack or manipulate AI agents and training pipelines. Security teams should treat timely OS and identity-layer patching as part of AI supply chain hardening, incorporating these dependencies into SBOM, threat modeling, and continuous monitoring around the AI stack.