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CVE-2026-6023

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

Published: Apr 22, 2026Updated: May 5, 2026 Sources: CVE List NVDCWE-502
NVD MITRE
8.1CVSSHIGH
EPSS Score
0.4%
Top 67.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

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 Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

telerik ui for asp.net ajaxprogress
Mixed
Enterprise Software / document-mgmt
Telerik UI for ASP.NET AJAXProgress Software
On-prem
Networking Infrastructure / load-balancer-proxy
progresscommercialCAEnterprise Softwareaka moveit transfer, ws ftp server, whatsup gold
progress softwarecommercialCANetworking Infrastructureaka progress software

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Workaround Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
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References

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

Timeline

Published
Apr 22, 2026
Last Updated
May 5, 2026

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