Is CVE-2026-124703 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124703 being exploited in the wild.

How severe is CVE-2026-124703?

High severity, with a CVSS score of 7.8, published 12 November 2026.

Which products and versions are affected?

Progress Telerik UI for WPF prior to 2026.4.1110.

Is there a fix for CVE-2026-124703?

Yes: fixed in 2026.4.1110. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-124703 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-124703?

Check whether you run Progress Telerik UI for WPF at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-124703: Telerik UI for WPF improper code generation vulnerability

CVE-2026-124703 · Severity: high · CVSS 7.8 · Published 2026-11-12

Telerik UI for WPF is a framework for building Windows desktop applications. A flaw in code generation allows attackers to execute unauthorized code within the context of any application built with vulnerable versions, potentially leading to full application compromise and data theft.

Technologies: Progress Telerik UI for WPF. Vendors: Progress.

Quick answers

Is CVE-2026-124703 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124703 being exploited in the wild.
How severe is CVE-2026-124703?: High severity, with a CVSS score of 7.8, published 12 November 2026.
Which products and versions are affected?: Progress Telerik UI for WPF prior to 2026.4.1110.
Is there a fix for CVE-2026-124703?: Yes: fixed in 2026.4.1110. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-124703 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-124703?: Check whether you run Progress Telerik UI for WPF at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 2026.4.1110

Technical details

An improper control of code generation vulnerability (CWE-94) in Telerik UI for WPF versions prior to 2026.4.1110 enables code injection (CAPEC-242). The vulnerability allows arbitrary code execution in the affected application's context; the attack vector and preconditions are not detailed in the advisory, but the high CVSS score suggests network accessibility or low user interaction requirements.

Affected products

Progress Telerik UI for WPF prior to 2026.4.1110

Timeline

2026-11-12: disclosed

References

https://www.telerik.com/products/wpf/documentation/knowledge-base/kb-security-improper-control-of-generation-of-code-cve-2026-124703

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