What is CVE-2026-13185?

CVE-2026-13185 is a high-severity vulnerability in Progress Software 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.

Deserialization in Progress Software 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

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.

Affected products

Progress Software Telerik Ui For Asp.net Ajax — versions 2013.1.220

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@progress.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-13185?: CVE-2026-13185 is a high-severity vulnerability in Progress Software 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.