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

Yes. CVE-2017-11317 is on the CISA Known Exploited Vulnerabilities list, added 2022-04-11.

What is the CVSS severity of CVE-2017-11317?

CVE-2017-11317 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-11317?

CVE-2017-11317 has an EPSS score of 83.48% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2017-11317?

No published fix for CVE-2017-11317 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-05-02. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2017-11317

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

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.

CWE-326

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-05-02

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

83.48%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability

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

Apply updates per vendor instructions.

Remediation due: 2022-05-02

References

Exploit2

Vendor Advisory1

telerik.com

Third-Party Advisory1

psirt.global.sonicwall.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-326 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0224	High	7.4	95%	-	Fix
CVE-2017-1000486	Critical	9.8	94%	KEV	Fix
CVE-2013-2566	Medium	5.9	84%	-	Fix
CVE-2018-18325	High	7.5	74%	KEV	-
CVE-2018-15811	High	7.5	74%	KEV	-
CVE-2011-3389	Medium	4.3	73%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-21.