CVE-2025-3600Network attack vector

Hosting-process crash via unsafe request reflection

Published May 14, 2025 · Updated Aug 27, 2025

Unsafe reflection in Progress Telerik UI for ASP.NET AJAX 2011.2.712 through 2025.1.218 allows remote attackers to crash the hosting process. Progress has not disclosed the reflected type selector or exact code locus; it confirms that crafted request data triggers unsafe reflection and an unhandled exception. Exposure requires a Telerik WebResource handler registered in web.config, and exploitation interrupts the application while its IIS process restarts.

CVSS severity7.5
High
EPSS probability24.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe reflection in Progress Telerik UI for ASP.NET AJAX 2011.2.712 through 2025.1.218 allows remote attackers to crash the hosting process. Progress has not disclosed the reflected type selector or exact code locus; it confirms that crafted request data triggers unsafe reflection and an unhandled exception. Exposure requires a Telerik WebResource handler registered in web.config, and exploitation interrupts the application while its IIS process restarts.

The record

CVE
CVE-2025-3600
Published
May 14, 2025
Updated
Aug 27, 2025
Vendor
Progress Software Corporation
Product
Telerik UI for ASP.NET AJAX
Classifications
CWE-470, CAPEC-138, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2011.2.712 <2025.1.416

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Progress Software Corporation · Telerik UI for ASP.NET AJAXversion=2011.2.712 <2025.1.416

Published CVSS scores

7.5Progress Software CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CAPEC-138Reflection Injection
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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