Microsoft has started releasing emergency security updates to fix a publicly disclosed remote code execution vulnerability. The vulnerability, dubbed PrintNightmare, is located in the Windows Print Spooler service. Organizations are urged to deploy the patches as soon as possible or disable inbound remote printing until the patches can be applied. Microsoft’s advisory states that all editions of Windows are affected and that exploitation for this vulnerability has been detected. There are now at least three public proof-of-concept exploit implementations for this flaw.”]