SYSTEM privilege escalation via unlocked deletion parent

TOCTOU file deletion in BleachBit before 6.0.1 allows local users to gain SYSTEM privileges during elevated Windows cleaning. The Windows deletion path checks a target and removes it without locking or revalidating its parent, letting a junction swap and native symlink redirect deletion to an attacker-selected file. A local unprivileged account must race an administrator-elevated cleaning run; arbitrary privileged file deletion can then be chained with Windows Installer behavior for SYSTEM access.