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CVE-2025-59547— DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation

Quick assessment

Affected
dnnsoftware Dnn.Platform
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DNN（又名DotNetNuke）是美国DNN公司的一套由微软支持、基于ASP.NET平台的开源内容管理系统（CMS）。该系统具有易于安装、可扩展、功能丰富等特点。 DNN 10.1.0之前版本存在安全漏洞，该漏洞源于CKEditor文件上传端点文件名清理不足，可能导致内部网络资源暴露。

CVSS 5.3 · Medium EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1046 · Network Service Discovery
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I. Basic Information for CVE-2025-59547

Vulnerability Information
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Vulnerability Title
DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation
Source: CVE Program / CVE List V5
Vulnerability Description
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, the CKEditor file upload endpoint has insufficient sanitization for filenames allowing probing network endpoints. A specially crafted request can be made to upload a file with Unicode characters, which would be translated into a path that could expose resources in the internal network of the hosted site. This issue has been patched in version 10.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
Unicode编码处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
DNN 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DNN（又名DotNetNuke）是美国DNN公司的一套由微软支持、基于ASP.NET平台的开源内容管理系统（CMS）。该系统具有易于安装、可扩展、功能丰富等特点。 DNN 10.1.0之前版本存在安全漏洞，该漏洞源于CKEditor文件上传端点文件名清理不足，可能导致内部网络资源暴露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
dnnsoftware Dnn.Platform < 10.1.0 -

II. Public POCs for CVE-2025-59547

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III. Intelligence Information for CVE-2025-59547

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Same Patch Batch · dnnsoftware · 2025-09-23 · 6 CVEs total

CVE-2025-59545 9.1 CRITICAL DNN Vulnerable to Stored Cross-Site Scripting (XSS) in the Prompt module
CVE-2025-59821 6.5 MEDIUM DNN vulnerable to Reflected Cross-Site Scripting (XSS) using url to profile
CVE-2025-59539 6.3 MEDIUM DNN affected by Stored Cross-Site Scripting (XSS) in Profile Biography field
CVE-2025-59546 2.4 LOW DNN Vulnerable to Stored XSS Using Backend Admin Credentials
CVE-2025-59548 DNN Vulnerable to Reflected Cross-Site Scripting (XSS) in CKEditor File Browser

IV. Related Vulnerabilities

Same product: Dnn.Platform
Same vendor: dnnsoftware
Same weakness: CWE-176

V. Comments for CVE-2025-59547

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