Windows NT is a legacy Windows operating system family based on the Windows NT kernel, introduced in the 1990s and forming the foundation for earlier Windows security architecture.
Overview
Windows NT is a legacy Windows operating system family based on the Windows NT kernel, introduced in the 1990s and forming the foundation for earlier Windows security architecture. Although superseded by newer Windows releases, legacy NT deployments persist in some environments, which increases cybersecurity risk due to aging code, limited support, and fewer available patches; attackers commonly target widely used Windows components such as Microsoft PowerPoint and vendor software ecosystems (e.g., HPE).
Related Threat Clusters
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CISA Flags Critical HPE OneView Vulnerability as Actively Exploited
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has identified a critical vulnerability in HPE OneView, tracked as CVE-2025-37164, as being actively exploited in attacks. This flaw affects HPE's…
19 articles · Updated January 8, 2026
Recent Intelligence Reports
- CISA Warns of Attacks on PowerPoint and HPE Vulnerabilities — Thecyberexpress · January 8, 2026