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CVE-2026-124700 URL Redirection to Untrusted Site in Progress Telerik UI for WinForms

7.8 highEPSS 0.1%

High (7.8) in progress software telerik ui for winforms. EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

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In Telerik UI for WinForms, versions prior to 2026.4.1111, an untrusted URL redirection vulnerability exists that allows an attacker to launch arbitrary operating system protocol handlers with attacker-controlled arguments via crafted documents and hyperlinks with a non-allowlisted URI scheme that the user opens.

Severity

CVSS 3.1

7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 1st percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-601 URL Redirection to Untrusted Site (Open Redirect)
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
ProgressSoftware (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • progress software:telerik ui for winforms

Versions

From the CNA's record in the CVE List.

ProductAffected
Progress Software Telerik UI for WinFormsfrom 2026.3.1007 before 2026.4.1111

Attack patterns (CAPEC)

  • CAPEC-178 Cross-Site Flashing Likelihood: Medium · Severity: Medium

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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