The critical Windows Netlogon remote code execution (RCE) vulnerability tracked as CVE-2026-41089 is now under active exploitation in the wild, significantly raising the risk profile for unpatched Windows Server environments.
MicrosoftWindows security
The flaw affects Windows servers configured as domain controllers and allows unauthenticated remote attackers to execute arbitrary code with SYSTEM-level privileges by sending specially crafted Netlogon network requests.
Disclosed and patched as part of Microsoft’s May 2026 Patch Tuesday release, CVE-2026-41089 is rated critical due to its combination of remote exploitability, lack of required user interaction, and the potential for complete domain takeover.
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