# CVE-2026-6023

> Vulnerability · severity: **HIGH** (CVSS 8.1).

## 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.

## Key facts

- **CVE ID:** CVE-2026-6023
- **Published:** 2026-04-22
- **CVSS severity:** HIGH
- **CVSS base score:** 8.1
- **CWE codes:** CWE-502

## Affected products

- `progress:telerik_ui_for_asp.net_ajax`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-6023

## Citation

> AI Analytics. CVE-2026-6023. Retrieved 2026-07-19 from https://api.ai-analytics.org/cve/CVE-2026-6023. Derived from NIST NVD. Licensed CC0.

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