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CVE Record

CVE-2019-19790: Path traversal in RadChart in Telerik UI for ASP.NET AJAX allows a remote attacker to read and delete an im...

Path traversal in RadChart in Telerik UI for ASP.NET AJAX allows a remote attacker to read and delete an image with extension .BMP, .EXIF, .GIF, .ICON, .JPEG, .PNG, .TIFF, or .WMF on the server through a specially crafted request. NOTE: RadChart was discontinued in 2014 in favor of RadHtmlChart. All RadChart versions were affected. To avoid this vulnerability, you must remove RadChart's HTTP handler from a web.config (its type is Telerik.Web.UI.ChartHttpHandler).

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2019-19790 affects legacy Telerik RadChart in UI for ASP.NET AJAX. A remote attacker could abuse its image handler to read or delete server image files with specific extensions. RadChart was discontinued in 2014, so the main risk is older ASP.NET applications that still have the handler enabled.

Executive priority

Prioritize remediation for public or partner-facing legacy ASP.NET applications. The issue is not KEV-listed in the provided data, but it enables unauthorized file read and deletion, and the affected component is discontinued.

Technical view

The issue is path traversal in RadChart's HTTP image handler. The CVE states all RadChart versions are affected and the vulnerable handler type is Telerik.Web.UI.ChartHttpHandler. Impact is limited by the listed image extensions, but includes unauthorized read and deletion of matching files on the server.

Likely exposure

Exposure is most likely in legacy ASP.NET AJAX applications using RadChart or retaining Telerik.Web.UI.ChartHttpHandler in web.config. Organizations that migrated to RadHtmlChart and removed the RadChart handler are less likely to be exposed.

Exploitation context

The CVE and Telerik references describe remote exploitation through a specially crafted request, but the provided sources do not show active exploitation, KEV listing, public exploit maturity, or CVSS severity. Treat internet-facing legacy apps as higher priority to review.

Researcher notes

Evidence supports path traversal in the RadChart image handler across all RadChart versions. The source bundle does not provide CVSS, CWE, patch version, or active exploitation evidence. The clearest remediation is handler removal and migration away from RadChart.

Mitigation direction

  • Remove Telerik.Web.UI.ChartHttpHandler from web.config where RadChart is no longer required.
  • Migrate remaining RadChart usage to supported alternatives such as RadHtmlChart.
  • Check Telerik guidance before relying on compensating controls.
  • Prioritize internet-facing ASP.NET applications and shared hosting environments.

Validation and detection

  • Inventory ASP.NET applications for RadChart dependencies.
  • Review web.config files for Telerik.Web.UI.ChartHttpHandler.
  • Confirm no application routes still require the RadChart handler.
  • Review server logs for unexpected RadChart image handler access.
  • Verify image directories do not contain sensitive operational files.
Prepared
Confidence
high
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2019-19790 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.