CVE-2026-6023

Deserialization of Untrusted Data Vulnerability in Telerik UI for ASP.NET AJAX

State: Published
Severity: 8.1 High
Published: Apr 22, 2026
Updated: Apr 23, 2026
Reserved: Apr 9, 2026

Description

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 remote code execution is possible.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	ProgressSoftware

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Telerik UI for ASP.NET AJAXProgress Software	2024.4.1114 to before 2026.1.421Affected

References

https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-deserialization-of-untrusted-data-cve-2026-6023vendor-advisory

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