Absolute path traversal vulnerability in the RadAsyncUpload control in the RadControls in Telerik UI for ASP.NET AJAX before Q3 2012 SP2 allows remote attackers to write to arbitrary files, and consequently execute arbitrary code, via a full pathname in the UploadID metadata value.

Cross-site scripting (XSS) vulnerability in Telerik UI for ASP.NET AJAX RadEditor control 2014.1.403.35, 2009.3.1208.20, and other versions allows remote attackers to inject arbitrary web script or HTML via CSS expressions in style attributes.

Multiple untrusted search path vulnerabilities in (1) EQATEC.Analytics.Monitor.Win32_vc100.dll and (2) EQATEC.Analytics.Monitor.Win32_vc100-x64.dll in Telerik Analytics Monitor Library before 3.2.125 allow local users to gain privileges via a Trojan horse (a) csunsapi.dll, (b) swift.dll, (c) nfhwcrhk.dll, or (d) surewarehook.dll file in an unspecified directory.

Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 and Sitefinity before 10.0.6412.0 does not properly protect Telerik.Web.UI.DialogParametersEncryptionKey or the MachineKey, which makes it easier for remote attackers to defeat cryptographic protection mechanisms, leading to a MachineKey leak, arbitrary file uploads or downloads, XSS, or ASP.NET ViewState compromise.

An issue found in Progress Telerik JustAssembly through 2018.1.323.2 and JustDecompile through 2018.2.605.0 makes it possible to execute code by decompiling a compiled .NET object (such as DLL or EXE) with an embedded resource file by clicking on the resource.

Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can result in remote code execution. (As of 2020.1.114, a default setting prevents the exploit. In 2019.3.1023, but not earlier versions, a non-default setting can prevent exploitation.)

Path traversal in RadChart in Telerik UI for ASP.NET AJAX allows a remote attacker to read and delete an image with extension .BMP, .EXIF, .GIF, .ICON, .JPEG, .PNG, .TIFF, or .WMF on the server through a specially crafted request. NOTE: RadChart was discontinued in 2014 in favor of RadHtmlChart. All RadChart versions were affected. To avoid this vulnerability, you must remove RadChart's HTTP handler from a web.config (its type is Telerik.Web.UI.ChartHttpHandler).

An issue was discovered in Progress Telerik UI for Silverlight before 2020.1.330. The RadUploadHandler class in RadUpload for Silverlight expects a web request that provides the file location of the uploading file along with a few other parameters. The uploading file location should be inside the directory where the upload handler class is defined. Before 2020.1.330, a crafted web request could result in uploads to arbitrary locations.

Telerik Fiddler through 5.0.20202.18177 allows attackers to execute arbitrary programs via a hostname with a trailing space character, followed by --utility-and-browser --utility-cmd-prefix= and the pathname of a locally installed program. The victim must interactively choose the Open On Browser option. Fixed in version 5.0.20204.

An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224. It allows unauthorized access to MicrosoftAjax.js through the Telerik.Web.UI.WebResource.axd file. This may allow the attacker to gain unauthorized access to the server and execute code. To exploit, one must use the parameter _TSM_HiddenField_ and inject a command at the end of the URI. NOTE: the vendor states that this is not a vulnerability. The request's output does not indicate that a "true" command was executed on the server, and the request's output does not leak any private source code or data from the server

In Progress Telerik UI for WPF versions prior to 2024 Q4 (2024.4.1111), a code execution attack is possible through an insecure deserialization vulnerability.

In Progress Telerik UI for WinForms versions prior to 2024 Q4 (2024.4.1113), a code execution attack is possible through an insecure deserialization vulnerability.

In Progress Telerik UI for WPF versions prior to 2024 Q4 (2024.4.1213), a code execution attack is possible through an insecure deserialization vulnerability.

In Progress® Telerik® Kendo UI for Vue versions v2.4.0 through v6.0.1, an attacker can introduce or modify properties within the global prototype chain which can result in denial of service or command injection.

In Progress® Telerik® KendoReact versions v3.5.0 through v9.4.0, an attacker can introduce or modify properties within the global prototype chain which can result in denial of service or command injection.

A local code execution vulnerability is possible in Telerik UI for WinForms beginning in v2021.1.122 but prior to v2024.2.514. This vulnerability could allow an untrusted theme assembly to execute arbitrary code on the local Windows system.

In Progress Telerik Report Server, version 2024 Q1 (10.0.24.305) or earlier, on IIS, an unauthenticated attacker can gain access to Telerik Report Server restricted functionality via an authentication bypass vulnerability.

In Progress Telerik UI for WinForms versions prior to 2024 Q3 (2024.3.924), a command injection attack is possible through improper neutralization of hyperlink elements.

In Progress Telerik UI for WPF versions prior to 2024 Q3 (2024.3.924), a code execution attack is possible through an insecure deserialization vulnerability.

In Progress® Telerik® UI for WinForms, versions prior to 2025 Q1 (2025.1.211), using the improper limitation of a target path can lead to decompressing an archive's content into a restricted directory.