Critical severity9.8CISA KEVNVD Advisory· Published Jul 3, 2017· Updated Jun 17, 2026
CVE-2017-9248
CVE-2017-9248
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
5- www.exploit-db.com/exploits/43873/nvdExploitThird Party AdvisoryVDB Entry
- www.securityfocus.com/bid/99965nvdBroken LinkThird Party AdvisoryVDB Entry
- www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinitynvdVendor Advisory
- www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weaknessnvdMitigationVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
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