Telerik UI for ASP.NET AJAX vulnerabilities
15 known vulnerabilities in Telerik UI for ASP.NET AJAX from Progress Software. 15 are rated high or critical, and 1 has been exploited in real attacks. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.
Latest first
- 8.1 High severity
Telerik UI for ASP.NET AJAX: Insufficient Verification of Data Authenticity
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 th
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Improper Limitation of a Pathname to a Restricted Directory
In Progress® Telerik® UI for AJAX prior to v2026.3.812, insufficient validation of client-supplied state in RadImageEditor may allow an attacker to influence which file is returned by the control's image cache, potentially exposing file contents outside the in
- 8.1 High severity
Telerik UI for ASP.NET AJAX: Deserialization of Untrusted Data
In Progress® Telerik® UI for AJAX prior to v2026.2.708, a deserialization vulnerability in the persistence utilities allows unsafe type instantiation from attacker-influenced persisted state, which can lead to remote code execution.
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Absolute Path Traversal
In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of the language parameter in the spell check handler may allow an attacker to influence server-side file path resolution and trigger unintended server-side requests.
- 8.1 High severity
Telerik UI for ASP.NET AJAX: Use of Externally-Controlled Input to Select Classes or Code
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.
- 8.1 High severity
Telerik UI for ASP.NET AJAX: Improper Limitation of a Pathname to a Restricted Directory
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
- 8.1 High severity
Telerik UI for ASP.NET AJAX: Deserialization of Untrusted Data
In Progress® Telerik® UI for AJAX prior to v2026.2.708, applications using cookie-based storage in RadPersistenceManager or RadDockLayout deserialize attacker-controlled cookie content, allowing unauthenticated remote code execution.
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Use of Hard-coded Cryptographic Key
In Progress® Telerik® UI for AJAX prior to v2026.2.708, when Telerik.Upload.ConfigurationHashKey is absent and machineKey is not explicitly configured, upload metadata integrity protection may fall back to a predictable default key, enabling attackers to forge
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Observable Timing Discrepancy
In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload upload metadata processing may leak cryptographic validity through measurable timing differences, enabling remote attackers to recover protected metadata values.
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Generation of Error Message Containing Sensitive Information
In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload client-state processing can distinguish decrypt failures from invalid-JSON parse failures, creating an oracle that reveals protected metadata values to remote attackers.
- 8.1 High severity
Telerik UI for ASP.NET AJAX: Use of Externally-Controlled Input to Select Classes or Code
In Progress® Telerik® UI for AJAX prior to v2026.2.708, forged upload metadata can influence AsyncUploadTypeName processing and trigger unsafe attacker-controlled type resolution, enabling remote code execution in affected deployments.
- 9.8 Critical severity
Telerik UI for ASP.NET AJAX: Deserialization of Untrusted Data
In Progress® Telerik® UI for AJAX versions 2024.4.1114 through 2026.1.421, the RadFilter control is vulnerable to insecure deserialization when restoring filter state if the state is exposed to the client. If an attacker tampers with this state, a server-side
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Uncontrolled Resource Consumption
In Progress® Telerik® UI for AJAX prior to 2026.1.421, RadAsyncUpload contains an uncontrolled resource consumption vulnerability that allows file uploads to exceed the configured maximum size due to missing cumulative size enforcement during chunk reassembly,
- 7.5 High severity
Telerik UI for ASP.NET AJAX: Use of Externally-Controlled Input to Select Classes or Code
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.
- 9.8 Critical severity
Telerik UI for ASP.NET AJAX Insecure Direct Object Reference Exploited
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.