CVE-2026-124701
Received Received - Intake

Deserialization of Untrusted Data 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, a deserialization of untrusted data vulnerability exists that allows an attacker to perform unauthorized actions 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-2026-124701
EUVD
EUVD-2026-124340

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-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This vulnerability is a deserialization of untrusted data flaw in Telerik UI for WinForms versions before 2026.4.1111. It allows an attacker to execute unauthorized actions within the affected application by manipulating serialized data.

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. Use commands like 'wmic product get name,version' on Windows or 'dpkg -l | grep telerik' on Linux to inspect installed packages.

Impact Analysis

An attacker could exploit this to perform actions with the same permissions as the application, potentially leading to data theft, system compromise, or unauthorized operations on the affected system.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements or HIPAA's safeguards for protected health information, potentially resulting in legal penalties or breaches of compliance.

Mitigation Strategies

Update Telerik UI for WinForms to version 2026.4.1111 or later to address the deserialization vulnerability.

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