CVE-2026-44470
HighCVSS 7.8Summary
Aplikacja Claude Desktop przed wersją 1.3834.0 miała komponent CoworkVMService, który działał jako SYSTEM i nie weryfikował, czy katalog VM bundle był rzeczywistym katalogiem czy dowiązaniem NTFS. Lokalne, nieuprzywilejowane konto użytkownika mogło zastąpić katalog VM bundle dowiązaniem do wybranego przez atakującego miejsca, co prowadziło do tworzenia plików z uprawnieniami SYSTEM w dowolnym katalogu.
Risk Assessment
Ta podatność może prowadzić do eskalacji uprawnień lokalnych, co stwarza poważne zagrożenie dla bezpieczeństwa systemu i danych organizacji.
Recommendation
Zaleca się aktualizację aplikacji Claude Desktop do wersji 1.3834.0 lub nowszej, aby usunąć tę podatność oraz wprowadzenie dodatkowych środków zabezpieczających w celu monitorowania i ograniczenia dostępu do krytycznych katalogów.
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Original NVD description (English source)
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. Prior to 1.3834.0, the CoworkVMService component in Claude Desktop for Windows ran as SYSTEM and did not validate whether the VM bundle directory was a real directory or an NTFS directory junction before creating files within it. A local non-elevated user could replace the user-writable VM bundle directory with a directory junction pointing to an attacker-chosen location, causing the service to create a SYSTEM-owned file in an arbitrary directory. This could be leveraged for local privilege escalation. This vulnerability is fixed in 1.3834.0.