A moderate flaw in CoCSoft Stream Down is due to a boundary error when processing a server response during a download request. The flaw can be exploited to cause buffer overflow vulnerability via overly long strings.
A successful attack allows to execute arbitrary code but requires to lure user to download a file from malicious server. The flaw was not patched yet.
CoCSoft Stream Down users should not download files from untrusted sources.

Source: Secunia
28.12.2011