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TI-2026-05284 Aliases CVE-2026-6023GHSA-mcrv-gh25-252c

Deserialization of Untrusted Data Vulnerability in Telerik UI for ASP.NET AJAX

Priority MEDIUM 44CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-502.

Summary

In Progress® Telerik® UI for AJAX versions 2024.4.1114 through 2026.1.421, the RadFilter control is vulnerable to insecure deserialization when restoring filter state if the state is exposed to the client. If an attacker tampers with this state, a server-side remote code execution is possible.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0054 45th percentileScored 2026-11-07
Fix Fixed Telerik UI for ASP.NET AJAX (Progress Software): 2026.1.421

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ProgressTelerik UI for ASP.NET AJAX2024.4.1114 to before 2026.1.4212026.1.421Patch availableCNA
  • Telerik UI for ASP.NET AJAX VendorProgress Affected 2024.4.1114 to before 2026.1.421 Fixed in 2026.1.421 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:progress:telerik_ui_for_asp.net_ajax:*:*:*:*:*:*:*:*2024.4.1114 to before 2026.1.421VulnerableProgress
  • cpe:2.3:a:progress:telerik_ui_for_asp.net_ajax:*:*:*:*:*:*:*:* Versions 2024.4.1114 to before 2026.1.421 Vulnerable ·Progress

Remediation

  • Fix · CNA Telerik UI for ASP.NET AJAX (Progress Software) Fixed in 2026.1.421

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Progress Software Telerik UI for ASP.NET AJAX 2026.1.421

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-05283 Uncontrolled Resource Consumption Vulnerability in Telerik UI for ASP.NET AJAXPriority LOW 39
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6023
  2. 2026-10-03 Alias added: GHSA-mcrv-gh25-252c
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Advisory 1

  • TI-2017-08395 Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-03167 Unsafe Reflection Vulnerability in Telerik UI for ASP.NET AJAX CVSS 3.1HIGH 7.5
  • TI-2019-14262 Path traversal in RadChart in Telerik UI for ASP.NET AJAX allows a remote attacker to… CVSS 3.1CRITICAL 9.8
  • TI-2021-09372 An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224. CVSS 3.1CRITICAL 9.8
  • TI-2014-01755 Absolute path traversal vulnerability in the RadAsyncUpload control in the RadControls in… CVSS 2.0HIGH 7.5
  • TI-2026-11200 SpellChecker DictionaryLanguage Path Traversal Vulnerability in Telerik UI for ASP.NET AJAX CVSS 3.1HIGH 7.5
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences