Integer overflow in the CYImage::LoadJPG method in YImage.dll in Yahoo! Messenger before 11.5.0.155, when photo sharing is enabled, might allow remote attackers to execute arbitrary code via a crafted JPG image that triggers a heap-based buffer overflow.

AOL Instant Messenger 5.5.x and earlier allows remote attackers to cause a denial of service (client crash) via an invalid smiley icon location in the sml parameter of a font tag.

AOL Instant Messenger (AIM) allows remote attackers to cause a denial of service (crash) via an "AddBuddy" link with the ScreenName parameter set to a large number of comma-separated values, possibly triggering a buffer overflow.

AOL Instant Messenger (AIM) allows remote attackers to steal files that are being transferred to other clients by connecting to port 4443 (Direct Connection) or port 5190 (file transfer) before the intended user.

Directory traversal vulnerability in AOL Instant Messenger (AIM) 4.8 beta and earlier allows remote attackers to create arbitrary files and execute commands via a Direct Connection with an IMG tag with a SRC attribute that specifies the target filename.

AOL Instant Messenger (AIM) 4.7.2480 and earlier allows remote attackers to cause a denial of service (application crash) via an instant message that contains a large amount of "<!--" HTML comments.

Buffer overflow in AOL Instant Messenger before 4.3.2229 allows remote attackers to execute arbitrary commands via a long "goim" command.

Format string vulnerability in AOL Instant Messenger (AIM) 4.1.2010 allows remote attackers to cause a denial of service and possibly execute arbitrary commands by transferring a file whose name includes format characters.