CVE-2017-9248
Progress Telerik UI for ASP.NET AJAX and Sitefinity Cryptographic Weakness Vulnerability
- Published
- Jul 3, 2017
- Updated
- Oct 21, 2025
- Assigning CNA
- mitre
- Evidence observed
- Jan 24, 2018
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.5%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 and Sitefinity before 10.0.6412.0 does not properly protect Telerik.Web.UI.DialogParametersEncryptionKey or the MachineKey, which makes it easier for remote attackers to defeat cryptographic protection mechanisms, leading to a MachineKey leak, arbitrary file uploads or downloads, XSS, or ASP.NET ViewState compromise.
Sources
8Telerik CVE-2017-9248 Vulnerability Scanner
- dp_cryptoExploit
Base64-based encryption oracle exploit for CVE-2017-9248 (Telerik UI for ASP.NET AJAX dialog handler)
- dp_cryptomgExploit
Another tool for exploiting CVE-2017-9248, a cryptographic weakness in Telerik UI for ASP.NET AJAX dialog handler.
Responsible use
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