Microsoft Internet Explorer 6 through 9, and 10 Consumer Preview, does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by attempting to access a nonexistent object, leading to a heap-based buffer overflow, aka "Col Element Remote Code Execution Vulnerability," as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2012.

Microsoft Internet Explorer 8 and 9 does not properly handle objects in memory, which allows user-assisted remote attackers to execute arbitrary code by accessing a deleted object, aka "Developer Toolbar Remote Code Execution Vulnerability."

Microsoft Internet Explorer 7 through 9 does not properly create and initialize string data, which allows remote attackers to obtain sensitive information from process memory via a crafted HTML document, aka "Null Byte Information Disclosure Vulnerability."

Cross-site scripting (XSS) vulnerability in Microsoft Internet Explorer 6 through 9 allows remote attackers to inject arbitrary web script or HTML via crafted character sequences with EUC-JP encoding, aka "EUC-JP Character Encoding Vulnerability."

The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted HTML document, aka "HTML Sanitization Vulnerability."

The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, allow remote attackers to cause a denial of service (application crash) via a long URI.

The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, allow remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a URI that lacks a required delimiter.

The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, provide different responses to remote requests depending on whether a ZIP pathname is valid, which allows remote attackers to obtain potentially sensitive information about the installation path and product version via a series of requests involving the Msxml2.XMLHTTP object.

Absolute path traversal vulnerability in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, might allow remote attackers to read arbitrary files in ZIP archives via a full pathname in the URI.

The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, might allow remote attackers to obtain sensitive information via a URI with a % (percent) character as its (1) last or (2) second-to-last character, in situations where a certain "post-URL data" buffer contains a 0x0000 character but a buffer overflow does not occur.

Memory leak in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, allows remote attackers to cause a denial of service (memory consumption) via a URI with multiple references to the same name-value pair.

Heap-based buffer overflow in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a URI with a % (percent) character as its (1) last or (2) second-to-last character.

Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "SelectAll Remote Code Execution Vulnerability."

Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "JScript9 Remote Code Execution Vulnerability."

Microsoft Internet Explorer 6 through 9 allows user-assisted remote attackers to execute arbitrary code via a crafted HTML document that is not properly handled during a "Print table of links" print operation, aka "Print Feature Remote Code Execution Vulnerability."

Microsoft Internet Explorer 6 through 9, and 10 Consumer Preview, allows remote attackers to bypass Protected Mode or cause a denial of service (memory corruption) by leveraging access to a Low integrity process, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2012.

Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "VML Remote Code Execution Vulnerability."

Microsoft Internet Explorer 9 does not properly handle the creation and initialization of string objects, which allows remote attackers to read data from arbitrary process-memory locations via a crafted web site, aka "Null Byte Information Disclosure Vulnerability."

Microsoft Internet Explorer 7 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "HTML Layout Remote Code Execution Vulnerability."

Microsoft Internet Explorer 6 through 9 does not properly perform copy-and-paste operations, which allows user-assisted remote attackers to read content from a different (1) domain or (2) zone via a crafted web site, aka "Copy and Paste Information Disclosure Vulnerability."