CVE-2026-124699
Received Received - Intake

Improper Code Generation in Telerik UI for WinForms

Publication date: 2026-11-12

Last updated on: 2026-11-12

Assigner: Progress Software Corporation

Description
In Telerik UI for WinForms, versions prior to 2026.4.1111, an improper control of code generation vulnerability exists that allows an attacker to supply a crafted expression and execute unauthorized code in the context of the affected application.

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Meta Information

Published
2026-11-12
Last Modified
2026-11-12
Generated
2026-11-12
AI Q&A
2026-11-12
EPSS Evaluated
N/A
NVD
CVE-2026-124699
EUVD
EUVD-2026-124337

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Progress Software Telerik UI for WinForms From 2026.3.1007 (inc) to 2026.4.1111 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

This vulnerability in Telerik UI for WinForms before version 2026.4.1111 allows an attacker to craft a malicious expression that executes unauthorized code within the affected application. It stems from improper control during code generation, enabling code execution without proper authorization.

Detection Guidance

To detect this vulnerability, check the installed version of Telerik UI for WinForms. If the version is prior to 2026.4.1111, the system is vulnerable. No specific commands are provided in the context, but verifying the software version is the primary detection method.

Impact Analysis

An attacker could exploit this to run arbitrary code on your system, potentially stealing data, installing malware, or taking control of the affected application. Since it requires user interaction (UI:R in CVSS), victims may unknowingly trigger the attack via crafted inputs.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy). Organizations using vulnerable versions may face compliance breaches, fines, or legal liabilities if exploited.

Mitigation Strategies

Update Telerik UI for WinForms to version 2026.4.1111 or later to address the improper code generation vulnerability.

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