Which products and versions are affected by CVE-2017-11317?

Affected: Ui For Asp.net Ajax (Telerik) versions 2017.2.503, 2017.2.621. The full list is in the CVE brief.

Is CVE-2017-11317 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 19, 2020.

Is CVE-2017-11317 in the CISA KEV catalog?

Yes. It was added on Apr 11, 2022 with a federal remediation due date of May 2, 2022.

Is there a public exploit for CVE-2017-11317?

Public exploit code is available.

Is there a fix for CVE-2017-11317?

Fixed versions are available, including Ui For Asp.net Ajax 2016.3.1027.

How urgently should CVE-2017-11317 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2017-11317

CriticalExploitedPublic exploit

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.

Published Mar 19, 2021 · Updated Oct 21, 2025

Key Facts

Patch immediately

CVE-2017-11317 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Ui For Asp.net Ajax (Telerik).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 19, 2020. Public exploit code is available.
EPSS estimates a 84% probability of exploitation in the next 30 days.
Fixed versions are available, including Ui For Asp.net Ajax 2016.3.1027.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

84%

Higher than 99.6% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2017-11317 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Apr 11, 2022	May 2, 2022	Not reported
Industry KEV feed	Jun 19, 2020	May 2, 2022	Not reported
CIRCL KEV	Apr 11, 2022	May 2, 2022	Not reported
ENISA EUVD	Apr 11, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Ui For Asp.net AjaxTelerik	2017.2.503, 2017.2.621	2016.3.1027

Patched Releases

Ui For Asp.net Ajax

2016.3.1027

Timeline

Added to Industry KEV feed
Jun 19, 2020
Publicly disclosed
Mar 19, 2021
Added to CISA KEV
Apr 11, 2022
Added to CIRCL KEV
Apr 11, 2022
Added to ENISA EUVD
Apr 11, 2022
Last updated
Oct 21, 2025

Weakness Type

CWE-326 Inadequate Encryption Strength

References

15 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: Ui For Asp.net Ajax (Telerik) versions 2017.2.503, 2017.2.621. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jun 19, 2020.
Yes. It was added on Apr 11, 2022 with a federal remediation due date of May 2, 2022.
Public exploit code is available.
Fixed versions are available, including Ui For Asp.net Ajax 2016.3.1027.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2017-11317 Running On Your Attack Surface?

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