This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Chilkat Crypt ActiveX control component.
The vulnerability, which is located in the Toolbar ActiveX control, can be exploited through misuse of the "SaveDecrypted" method. It may allow remote attackers to overwrite arbitrary file on a vulnerable system.
Diego Uscanga aTube Catcher 2.3.570
Chilkat Chilkat Crypt ActiveX 2.1
Information Disclosure: Remote attackers can gain sensitive information from
Currently we are not aware of any vendor supplied patches.