Insecure Deserialization Vulnerability in Progress Telerik UI for AJAX
CVE-2026-6023

8.1HIGH

Key Information:

Vendor

Progress Software
Status
Telerik Ui For Asp.net Ajax
Vendor
CVE Published:
22 April 2026

What is CVE-2026-6023?

The Telerik UI for AJAX's RadFilter control is susceptible to insecure deserialization issues. This vulnerability arises when the filter state is allowed to be exposed to clients. If an attacker manipulates this data, it could lead to unauthorized remote code execution on the server, posing a significant security risk.

Affected Version(s)

Telerik UI for ASP.NET AJAX 2024.4.1114 < 2026.1.421

References

https://www.telerik.com/products/aspnet-ajax/documentatio...
vendor-advisory

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.