CVE-2026-6023: CWE-502 Deserialization of Untrusted Data in Progress Software Telerik UI for ASP.NET AJAX
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-6023) affects the RadFilter control of Telerik UI for ASP.NET AJAX versions 2024.4.1114 through 2026.1.421. It involves insecure deserialization (CWE-502) of filter state data that is exposed to the client. If an attacker manipulates this serialized state, they may trigger server-side remote code execution. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability, with network attack vector, no privileges required, and no user interaction needed. No official patch or remediation level has been published by Progress Software as of the vulnerability's disclosure date.
Potential Impact
Successful exploitation could allow an unauthenticated remote attacker to execute arbitrary code on the server hosting the vulnerable Telerik UI for ASP.NET AJAX RadFilter control. This compromises confidentiality, integrity, and availability of the affected system. No known exploits in the wild have been reported so far.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid exposing the RadFilter control's serialized filter state to clients or implement strict validation and integrity checks on any deserialized data. Monitor Progress Software's advisories for updates on patches or official mitigations.
CVE-2026-6023: CWE-502 Deserialization of Untrusted Data in Progress Software Telerik UI for ASP.NET AJAX
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.
CVSS v3.1
Score 8.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-6023) affects the RadFilter control of Telerik UI for ASP.NET AJAX versions 2024.4.1114 through 2026.1.421. It involves insecure deserialization (CWE-502) of filter state data that is exposed to the client. If an attacker manipulates this serialized state, they may trigger server-side remote code execution. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability, with network attack vector, no privileges required, and no user interaction needed. No official patch or remediation level has been published by Progress Software as of the vulnerability's disclosure date.
Potential Impact
Successful exploitation could allow an unauthenticated remote attacker to execute arbitrary code on the server hosting the vulnerable Telerik UI for ASP.NET AJAX RadFilter control. This compromises confidentiality, integrity, and availability of the affected system. No known exploits in the wild have been reported so far.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid exposing the RadFilter control's serialized filter state to clients or implement strict validation and integrity checks on any deserialized data. Monitor Progress Software's advisories for updates on patches or official mitigations.
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: 4/29/2026, 11:07:16 AM
Last updated: 6/5/2026, 12:08:21 PM
Views: 88
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