INOTEC Sicherheitstechnik WebServer CPS220/64 3.3.19 allows a remote attacker to read arbitrary files via absolute path traversal, such as with the /cgi-bin/display?file=/etc/passwd URI.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.