Nt4.rar Apr 2026

When a user attempted to extract a seemingly harmless file inside the archive, WinRAR would silently drop a backdoor or a trojan into the Windows Startup folder. Windows NT 4.0 : Microsoft - Internet Archive

The RAR format is proprietary to the archiving utility WinRAR. In late 2023 and mid-2025, security researchers discovered severe zero-day vulnerabilities in WinRAR (such as CVE-2023-38831 and CVE-2025-8088). nT4.rar

These flaws allowed attackers to utilize path traversal and NTFS Alternate Data Streams (ADS) to execute arbitrary code. When a user attempted to extract a seemingly