Yahoo! Messenger 6.0.0.1750, and possibly other versions before 6.0.0.1921, does not properly display long filenames in file dialog boxes, which could allow remote attackers to trick users into downloading and executing programs via file names containing a large number of spaces and multiple file extensions.

Cross-site scripting (XSS) vulnerability in Gadu-Gadu build 155 and earlier allows remote attackers to inject arbitrary web script via a URL, which is echoed in a popup window that displays a parsing error message, a different vulnerability than CVE-2004-1229.

Gadu-Gadu allows remote attackers to bypass the "image send" option by sending a very small image file, which could be used in conjunction with image-related vulnerabilities.

Gadu-Gadu build 155 and earlier allows remote attackers to cause a denial of service (infinite loop) via a message that contains an image whose filename does not start with restricted characters.

Heap-based buffer overflow in the image sending feature in Gadu-Gadu 6.0 build 149 allows remote attackers to execute arbitrary code via a crafted GG_MSG_IMAGE_REPLY message.

Microsoft MSN Messenger 6.0 and 6.1 does not properly handle certain requests, which allows remote attackers to read arbitrary files.