CVE-2026-6023: CWE-502 Deserialization of Untrusted Data in Progress Software Telerik UI for ASP.NET AJAX
CVE-2026-6023 is a high-severity vulnerability in Progress Software's Telerik UI for ASP. NET AJAX, specifically affecting the RadFilter control in versions 2024. 4. 1114 through 2026. 1. 421. The issue arises from insecure deserialization of untrusted data when restoring filter state exposed to the client. An attacker who can tamper with this state may achieve server-side remote code execution. The vulnerability has a CVSS score of 8. 1, indicating a significant risk.
AI Analysis
Technical Summary
The vulnerability CVE-2026-6023 affects Progress Software's Telerik UI for ASP.NET AJAX RadFilter control in versions 2024.4.1114 through 2026.1.421. It involves insecure deserialization (CWE-502) of filter state data when that state is exposed to the client side. If an attacker modifies this serialized state, it can lead to server-side remote code execution. The CVSS 3.1 base score is 8.1, reflecting network attack vector, high impact on confidentiality, integrity, and availability, and no required privileges or user interaction. No official remediation or patch is currently documented by the vendor, and the product is not a cloud service, so remediation depends on vendor updates or user mitigations.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to execute arbitrary code on the server hosting Telerik UI for ASP.NET AJAX, potentially leading to full system compromise. The impact affects confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid exposing the RadFilter control's serialized filter state to untrusted clients or implement additional validation and integrity checks on the deserialized data to mitigate risk.
CVE-2026-6023: CWE-502 Deserialization of Untrusted Data in Progress Software Telerik UI for ASP.NET AJAX
Description
CVE-2026-6023 is a high-severity vulnerability in Progress Software's Telerik UI for ASP. NET AJAX, specifically affecting the RadFilter control in versions 2024. 4. 1114 through 2026. 1. 421. The issue arises from insecure deserialization of untrusted data when restoring filter state exposed to the client. An attacker who can tamper with this state may achieve server-side remote code execution. The vulnerability has a CVSS score of 8. 1, indicating a significant risk.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-6023 affects Progress Software's Telerik UI for ASP.NET AJAX RadFilter control in versions 2024.4.1114 through 2026.1.421. It involves insecure deserialization (CWE-502) of filter state data when that state is exposed to the client side. If an attacker modifies this serialized state, it can lead to server-side remote code execution. The CVSS 3.1 base score is 8.1, reflecting network attack vector, high impact on confidentiality, integrity, and availability, and no required privileges or user interaction. No official remediation or patch is currently documented by the vendor, and the product is not a cloud service, so remediation depends on vendor updates or user mitigations.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to execute arbitrary code on the server hosting Telerik UI for ASP.NET AJAX, potentially leading to full system compromise. The impact affects confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid exposing the RadFilter control's serialized filter state to untrusted clients or implement additional validation and integrity checks on the deserialized data to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ProgressSoftware
- Date Reserved
- 2026-04-09T15:47:27.389Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e87cbe19fe3cd2cd7bf970
Added to database: 4/22/2026, 7:46:06 AM
Last enriched: 4/22/2026, 8:01:06 AM
Last updated: 4/22/2026, 9:53:33 AM
Views: 5
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