CVE-2026-13190
Unsafe deserialization in Telerik UI for AJAX allows remote code execution.
Is CVE-2026-13190 being exploited?
Not confirmed. CVE-2026-13190 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.67% probability of exploitation in the next 30 days.
How severe is CVE-2026-13190?
CVE-2026-13190 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-13190?
Yes. A fix has been recorded for CVE-2026-13190. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-13190 affect?
CVE-2026-13190 affects Progress Telerik UI for ASP.NET AJAX < v2026.2.708, Applications using Telerik AJAX persistence utilities. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-13190?
Upgrade to v2026.2.708+; block/validate persisted state endpoints if patch delayed
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via unsafe deserialization of attacker-controlled persisted state, enabling arbitrary code execution on affected servers.
Immediate action required
- affected>= 2011.2.712 and < 2026.2.708
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.