CVE-2011-1845

CVE-2011-1845 describes multiple memory leaks within the DataGrid control of Microsoft Silverlight 4, specifically versions prior to 4.0.60310.0. These leaks can be triggered by applications utilizing INotifyDataErrorInfo.ErrorsChanged event subscriptions or TextBlock/TextBox elements, leading to a denial of service through memory exhaustion. With a CVSS score of 7.8 (High) and an AV:N/AC:L/Au:N/C:N/I:N/A:C vector, this vulnerability is easily exploitable over the network with no authentication required, resulting in a complete loss of availability. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.