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Findings

CVE-2019-18935

Progress Telerik UI for ASP.NET AJAX Deserialization of Untrusted Data Vulnerability

Published Dec 11, 2019 · updated Jun 16, 2026 · telerik ui for asp.net ajax

Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can result in remote code execution. (As of 2020.1.114, a default setting prevents the exploit. In 2019.3.1023, but not earlier versions, a non-default setting can prevent exploitation.)

Timeline

Detection, updates, and resolution for this record.

  1. Dec 11, 2019 · Catalog

    Detected

    Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can result in remote code execution. (As of 2020.1.114, a default setting prevents the exploit. In 2019.3.1023, but not earl

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can result in remote code execution. (As of 2020.1.114, a default setting prevents the exploit. In 2019.3.1023, but not earl

Required action

Apply updates per vendor instructions.

CISA due date May 3, 2022

Affected

  • cpe telerik/ui for asp.net ajaxversion unspecified
  • vendor Progress Telerik UI for ASP.NET AJAXversion unspecified

Sources

  • CISA KEVCVE-2019-18935

    Progress Telerik UI for ASP.NET AJAX contains a deserialization of untrusted data vulnerability through RadAsyncUpload which leads to code execution on the server in the context of the w3wp.exe process.

    cisa.gov
  • CVE.orgCVE-2019-18935

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2019-18935

    30-day exploitation probability 99.7%

    first.org
  • Exploit Database47793

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit Modulesexploit_windows/http/telerik_rau_deserialization

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2019-18935

    Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncUpload function. This is exploitable when the encryption keys are known due to the presence of CVE-2017-11317 or CVE-2017-11357, or other means. Exploitation can

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/155720/Telerik-UI-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm Securityhttp://packetstormsecurity.com/files/159653/Telerik-UI-ASP.NET-AJAX-RadAsyncUpload-Deserialization.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

CVE-2019-18935 · ZeroDay Findings