ICQ 7 does not verify the authenticity of updates, which allows man-in-the-middle attackers to execute arbitrary code via a crafted file that is fetched through an automatic-update mechanism.

toolbaru.dll in ICQ Toolbar (ICQToolbar) 2.3 allows remote attackers to cause a denial of service (toolbar crash) via a long argument to the (1) RequestURL, (2) GetPropertyById, or (3) SetPropertyById method, different vectors than CVE-2008-7135.

toolbaru.dll in ICQ Toolbar (ICQToolbar) 2.3 allows remote attackers to cause a denial of service (toolbar crash) via a long argument to the IsChecked method, a different vector than CVE-2008-7136.

Stack-based buffer overflow in the URL Search Hook (ICQToolBar.dll) in ICQ 6.5 allows remote attackers to cause a denial of service (persistent crash) and possibly execute arbitrary code via an Internet shortcut .URL file containing a long URL parameter, which triggers a crash when browsing a folder that contains this file.

licq before 1.3.6 allows remote attackers to cause a denial of service (file-descriptor exhaustion and application crash) via a large number of connections.

Heap-based buffer overflow in the boxelyRenderer module in the Personal Status Manager feature in ICQ 6.0 build 6043 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted personal status message.

Format string vulnerability in the embedded Internet Explorer component for Mirabilis ICQ 6 build 6043 allows remote servers to execute arbitrary code or cause a denial of service (crash) via unspecified vectors related to HTML code generation.

Multiple buffer overflows in Konst CenterICQ 4.9.11 through 4.21 allow remote attackers to execute arbitrary code via unspecified vectors. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information. NOTE: this might overlap CVE-2007-0160.

Directory traversal vulnerability in AOL Instant Messenger (AIM) 5.9 and earlier, and ICQ 5.1 and probably earlier, allows user-assisted remote attackers to write files to arbitrary locations via a .. (dot dot) in a filename in a file transfer operation.

Stack-based buffer overflow in the LiveJournal support (hooks/ljhook.cc) in CenterICQ 4.9.11 through 4.21.0, when using unofficial LiveJournal servers, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by adding the victim as a friend and using long (1) username and (2) real name strings.