This vulnerability was a major security concern in 2023 because it allowed attackers to execute arbitrary code when a user simply attempted to view a benign-looking file (like a .jpg or .txt ) inside a specially crafted ZIP or RAR archive. Core Technical Details Logic bug (Input Validation) [1, 2]. CVE ID: CVE-2023-38831 [2]. Affected Versions: WinRAR versions prior to 6.23 [1, 3].
Inside the archive, there is a file (e.g., document.pdf ) and a folder with the exact same name ( document.pdf —note the trailing space) [4, 6]. 50596.rar
Full system compromise; attackers can execute malware, steal data, or gain persistent access [2, 5]. How the Exploit Works This vulnerability was a major security concern in
The "50596.rar" file demonstrates a flaw in how WinRAR processes file expansion. The exploit relies on a directory structure trick: Affected Versions: WinRAR versions prior to 6
Many modern operating systems (Windows 11, macOS) now have native support for RAR and ZIP files, which are not susceptible to this specific WinRAR-based logic bug.