ACTIVELY EXPLOITED
CVE-2019-18935: Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability
| Vendor | Progress |
|---|---|
| Product | Telerik UI for ASP.NET AJAX |
| Actively exploited | Yes |
| Added to CISA KEV | 3 Nov 2021 |
| CISA federal deadline | 3 May 2022 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-502 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Progress Telerik UI for ASP.NET AJAX contains a deserialization of untrusted data vulnerability through RadAsyncUpload which leads to code execution on the server in the context of the w3wp.exe process.
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.