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.

Buffer overflow in the CoVideoWindow.ocx ActiveX control 5.0.907.1 in Eyeball MessengerSDK, as used in products such as SiOL Komunikator 1.3, allows remote attackers to execute arbitrary code via a large argument supplied to the BGColor method. NOTE: this might only be a vulnerability in certain insecure configurations of Internet Explorer.

Unspecified vulnerability in the Chat Room functionality in Yahoo! Messenger 8.1.0.239 and earlier allows remote attackers to cause a denial of service via unspecified vectors. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Buffer overflow in the YMMAPI.YMailAttach ActiveX control (ymmapi.dll) before 2005.1.1.4 in Yahoo! Messenger allows remote attackers to execute arbitrary code via a crafted HTML document. NOTE: some details were obtained from third party information.

SQL injection vulnerability in user logon authentication request handling in Cool_CoolD.exe in Cool Manager 5.0 (5,60,90,28) and Cool Messenger Office/School Server 5.5 (5,65,12,13) allows remote attackers to execute arbitrary SQL commands via the username field.

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.

Buffer overflow in Yahoo! Messenger allows remote attackers to execute arbitrary code via the offline mode.

The Buddy icon file for AOL Instant Messenger (AIM) 4.3 through 5.5 is created in a predictable location, which may allow remote attackers to use a shell: URI to exploit other vulnerabilities that involve predictable locations.

Multiple buffer overflows in libpng 1.2.5 and earlier, as used in multiple products, allow remote attackers to execute arbitrary code via malformed PNG images in which (1) the png_handle_tRNS function does not properly validate the length of transparency chunk (tRNS) data, or the (2) png_handle_sBIT or (3) png_handle_hIST functions do not perform sufficient bounds checking.

Buffer overflow in Yahoo! Messenger before February 2002 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long set_buddygrp field.