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CVE-2017-11317

Telerik UI for ASP.NET AJAX Unrestricted File Upload

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 84.2%
  1. Published23 Aug 2017
  2. Added to CISA KEV11 Apr 2022
  3. Remediation due2 May 2022
Actively exploited (CISA KEV)

Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

Added to KEV: 11 Apr 2022Federal remediation due: 2 May 2022

Description

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Telerik UI For Asp.net Ajax≤ 2016.3.1027 · 2017.2.503 · 2017.2.621

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2017-11317 being actively exploited?

Yes. CVE-2017-11317 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 11 Apr 2022.

How severe is CVE-2017-11317?

CVE-2017-11317 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 84.2% probability of exploitation.

Which products are affected by CVE-2017-11317?

Affected products include Telerik UI For Asp.net Ajax.

How do I fix CVE-2017-11317?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2017-11317 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.