Named Pipes Under Attack: Securing Windows Interprocess Communication

Windows named pipes provide a fast mechanism for interprocess communication on Windows systems, but improper access controls can allow untrusted processes to interact with privileged services. According to a report from BleepingComputer, ThreatLocker has published guidance addressing the security implications of poorly secured named pipes. The advisory notes that threat actors may exploit weakly protected pipes for unauthorized interprocess communication or privilege escalation. ThreatLocker recommends implementing endpoint verification, command authorization, strict input validation, and narrowly scoped privileges as defensive best practices. The report does not cite a specific CVE or confirm active exploits in the wild, but emphasizes that misconfigured access controls represent a significant risk vector. Organizations using Windows named pipes for internal service communication are advised to review and tighten access controls in line with the recommended mitigations.