CVE-2017-11317
KEVTelerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability
Description
Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX allows remote attackers to perform arbitrary file uploads or execute arbitrary code.
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 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedAug 23, 2017
Last modifiedJun 17, 2026
Added to KEVApr 11, 2022
Remediation dueMay 2, 2022
References
- packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.htmlExploitThird Party Advisory
- telerik.com/support/kb/aspnet-ajax/upload-%28async%29/details/unrestricted-file-uploadMitigationVendor Advisory
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0006Third Party Advisory
- exploit-db.com/exploits/43874/ExploitThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11317US Government Resource
0 recent articles mention this CVE
87
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1639 days
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 84.2% · top 1% of all CVEs
- Weakness
- CWE-326
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.