Telerik UI Padding-Oracle Chain Chained to Unauthenticated RCE
Proof-of-concept exploit targets AES-CBC padding oracle in Telerik UI for ASP.NET AJAX; vendor patched chain in July 2026
Key Takeaways
- TantoSec published a proof-of-concept exploit chain chaining a padding oracle to unauthenticated RCE in Telerik UI for ASP.NET AJAX.
- Exploitation is conditional on a non-default application configuration.
- Progress Software released a patch in July 2026 addressing the vulnerability.
- No confirmed reports of wild exploitation as of publication.
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