Vulnerability intelligence

CVE-2026-13182

Progress Software Telerik UI for ASP.NET AJAX CWE-209

In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload client-state processing can distinguish decrypt failures from invalid-JSON parse failures, creating an oracle that reveals protected metadata values to remote attackers.

CVSS Score

7.5

High

EPSS — Exploit Probability

0.5%

Riskier than 42% of all CVEs · checked 2026-10-21

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Sep 7, 2026 · latest Sep 7, 2026

Coverage timeline

Telerik UI Flaw Enables Unauthenticated IIS Server Takeover
thehackernews.com · Sep 7, 2026

Related CVEs — Progress Software

CVE-2026-91140 CVE-2026-80462 CVE-2026-13181 CVE-2026-13183 CVE-2026-13185 CVE-2026-59686 CVE-2026-7312 CVE-2026-7198