Deserialization in Progress Telerik Ui For Asp.net Ajax
CVE-2026-13185
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Progress Telerik Ui For Asp.net Ajax
- Progress Software Telerik Ui For Asp.net Ajax — versions 2013.1.220
Weakness classification (CWE)
References
- www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-p… (vendor-advisory, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-13185?
- CVE-2026-13185 is a high-severity vulnerability in Progress Telerik Ui For Asp.net Ajax, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-07-22.
- How severe is CVE-2026-13185?
- High severity. CVSS v3 base score is 8.1 out of 10.