In Progress® Telerik® UI for AJAX prior to v2026.3.812, insufficient integrity protection of dialog request parameters used by the RadEditor file browser may allow an attacker who has obtained certain application encryption key material to alter the folders the file browser reads from, writes to, and uploads into, potentially resulting in remote code execution.

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.

In Progress® Telerik® UI for AJAX prior to v2026.2.708, a path traversal vulnerability in the file-based persistence storage provider can be exploited when the storage key is derived from user-controlled input, enabling attacker-controlled deserialization and remote code execution.

In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler provider type input may be tampered with, potentially altering dialog processing and enabling chained exploitation.

In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler request parameters may be tampered with, potentially altering dialog server-side behavior and enabling chained exploitation.

The user may be redirected to an arbitrary site in Sitefinity 15.1.8321.0 and previous versions.

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.

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.)

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.

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.

In Progress Telerik UI for WinUI versions prior to 2025 Q1 (3.0.0), a command injection attack is possible through improper neutralization of hyperlink elements.

In Progress® Telerik® UI for AJAX, versions prior to 2026.1.225, an insufficient entropy vulnerability exists in RadAsyncUpload, where a predictable temporary identifier, based on timestamp and filename, can enable collisions and file content tampering.

In Progress® Telerik® UI for AJAX, versions 2011.2.712 to 2025.1.218, an unsafe reflection vulnerability exists that may lead to an unhandled exception resulting in a crash of the hosting process and denial of service.

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.

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.

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).

DISPUTED 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 TSMHiddenField 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® Reporting versions prior to 2025 Q1 (19.0.25.211), information disclosure is possible by a local threat actor through an absolute path vulnerability.

In Progress® Telerik® Report Server, versions prior to 2025 Q1 (11.0.25.211) when using the older .NET Framework implementation, communication of non-sensitive information between the service agent process and app host process occurs over an unencrypted tunnel, which can be subjected to local network traffic sniffing.

In Progress® Telerik® Document Processing Libraries, versions prior to 2025 Q1 (2025.1.205), unzipping an archive can lead to arbitrary file system access.

In Progress® Telerik® Document Processing Libraries, versions prior to 2025 Q1 (2025.1.205), using .NET Standard 2.0, the contents of a file at an arbitrary path can be exported to RTF.

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

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

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.Win32vc100.dll and (2) EQATEC.Analytics.Monitor.Win32vc100-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.

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.