๐Ÿ” CVE Alert

CVE-2026-124701

HIGH 7.8

Deserialization of Untrusted Data in Progress Telerik UI for WinForms

CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-502
Vendor progress software
Product telerik ui for winforms
Published Nov 12, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Affected Versions

Progress Software / Telerik UI for WinForms
2026.3.1007 < 2026.4.1111

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
telerik.com: https://www.telerik.com/products/winforms/documentation/knowledge-base/kb-security-deserialization-of-untrusted-data-cve-2026-124701