Critical 9.8Known exploited (CISA KEV)Published Aug 23, 2017

CVE-2017-11317Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitrary file uploads or…

Updated under an hour ago (2026-10-19 07:50 UTC)

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It affects telerik ui_for_asp.net_ajax. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Apr 11, 2022; federal agencies had to remediate by May 2, 2022. Treat that date as your deadline.

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Every CVE for telerik ui_for_asp.net_ajax

Exploited in the last 30 days

Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-326
Known exploited: Added to CISA KEV Apr 11, 2022; federal remediation due May 2, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 84.17% (percentile 100)
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

telerik ui_for_asp.net_ajax telerik:ui_for_asp.net_ajax	through 2016.3.1027; 2017.2.503; 2017.2.621	NVD

References

https://www.exploit-db.com/exploits/43874/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
http://www.telerik.com/support/kb/aspnet-ajax/upload-%28async%29/details/unrestricted-file-uploadx-refsource-confirm, mitigation, vendor-advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0006x-refsource-confirm, third-party-advisory
http://packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11317us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.