ACTIVELY EXPLOITED
CVE-2017-9248: Progress Telerik UI for ASP.NET AJAX and Sitefinity Cryptographic Weakness Vulnerability
| Vendor | Progress |
|---|---|
| Product | ASP.NET AJAX and Sitefinity |
| Actively exploited | Yes |
| Added to CISA KEV | 3 Nov 2021 |
| CISA federal deadline | 3 May 2022 |
| Weakness (CWE) | CWE-522 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Progress Telerik UI for ASP.NET AJAX and Sitefinity have a cryptographic weakness in Telerik.Web.UI.dll that can be exploited to disclose encryption keys (Telerik.Web.UI.DialogParametersEncryptionKey and/or the MachineKey), perform cross-site-scripting (XSS) attacks, compromise the ASP.NET ViewState, and/or upload and download files.
SOURCES
Other Progress flaws
- CVE-2026-8037: Progress LoadMaster Command Injection Vulnerability
- CVE-2024-4885: Progress WhatsUp Gold Path Traversal Vulnerability
- CVE-2024-1212: Progress Kemp LoadMaster OS Command Injection Vulnerability
- CVE-2024-6670: Progress WhatsUp Gold SQL Injection Vulnerability
- CVE-2024-4358: Progress Telerik Report Server Authentication Bypass by Spoofing Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.