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CVE-2017-11317: Telerik UI for ASP.NET AJAX Unrestricted File Upload Vulnerability

criticalknown exploitedpublic exploitCVE-2017-11317
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

CSIRTS triage

vendor: Progressproduct: Telerik UI for ASP.NET AJAXCode injection
What
The product allows remote attackers to perform arbitrary file uploads or execute arbitrary code.
Who is affected
Users of Telerik UI for ASP.NET AJAX are affected.
Urgency
Remediation is urgent as the vulnerability is actively exploited and critical.
Action
Update to the latest version of Telerik UI for ASP.NET AJAX.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-04-11
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2017-11317

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2017-11317coverage & exploitation statusNVD · CVE.org

Recent advisories for Telerik UI for

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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