CVE-2026-13185

HIGH 8.1

PersistenceFramework Cookie Deserialization Vulnerability in Telerik UI for ASP.NET AJAX

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

In Progress® Telerik® UI for AJAX prior to v2026.2.708, applications using cookie-based storage in RadPersistenceManager or RadDockLayout deserialize attacker-controlled cookie content, allowing unauthenticated remote code execution.

CWE	CWE-502
Vendor	progress software
Product	telerik ui for asp.net ajax
Published	Jul 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Progress Software / Telerik UI for ASP.NET AJAX

2013.1.220 < 2026.2.708

References

NVD ↗ CVE.org ↗ EPSS Data ↗

telerik.com: https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-persistence-cookie-deserialization-CVE-2026-13185

Credits

Markus Wulftange with CODE WHITE GmbH