CVE-2025-64095: DNN.PLATFORM DNN Insufficient Access Control - Vulnerability

CRITICAL
Advisory Identifier: GHSA-3m8r-w7xg-jqvw
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CVSS 10.0
CWE-434
Published
Advisory Summary

CVE-2025-64095 is a CRITICAL (CVSS 10.0) dnn insufficient access control - vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting DNN.PLATFORM libraries in the NuGet ecosystem. The issue involves dnn insufficient access control - image upload allows for site content overwrite. Remediation is available by upgrading affected packages to version 10.1.1.

CVE-2025-64095 at a Glance

CVE Identifier CVE-2025-64095
GHSA Identifier GHSA-3m8r-w7xg-jqvw
Severity CRITICAL
CVSS v3.1 Base Score 10.0
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product DNN.PLATFORM
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 10.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-64095

To remediate this vulnerability, upgrade all affected DNN.PLATFORM dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

DNN.PLATFORM fixed: 10.1.1 
Upgrade DNN.PLATFORM to 10.1.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for DNN.PLATFORM

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-64095, inspect your project dependencies for DNN.PLATFORM:

inspect dependencies for DNN.PLATFORM

Analyze the terminal output to locate any version of DNN.PLATFORM in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.1.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In DNN.PLATFORM, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary The default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files. ### Description An unauthenticated user can upload and replace existing files allowing defacing a website and combined with other issue, injection XSS payloads.

CVE-2025-64095 Affected DNN.PLATFORM Versions

1 component(s)
Fixed Versions:
10.1.1
Product / Package Ecosystem Affected Versions Fixed Version
DNN.PLATFORM
nuget/DNN.PLATFORM
NuGet
< 10.1.1
10.1.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-3m8r-w7xg-jqvw
NVD — CVE-2025-64095 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64095
DNN.PLATFORM Source Repository REPOSITORY
https://github.com/dnnsoftware/Dnn.Platform

Frequently Asked Questions

What is CVE-2025-64095?
CVE-2025-64095 is a security vulnerability in DNN.PLATFORM involving DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which DNN.PLATFORM versions are affected?
Affected versions include releases prior to 10.1.1 across affected packages: DNN.PLATFORM.
What version fixes CVE-2025-64095?
Upgrading to 10.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is DNN.PLATFORM affected?
Yes, DNN.PLATFORM is affected in releases prior to 10.1.1. Upgrade your dependency to 10.1.1 or later.
What is the CVSS score of CVE-2025-64095?
CVE-2025-64095 has a CVSS v3.1 base score of 10.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2025-64095?
CVE-2025-64095 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check NuGet dependencies for CVE-2025-64095?
Run the dependency tree command: 'inspect dependencies for DNN.PLATFORM'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3m8r-w7xg-jqvw",
  "modified" : "2025-10-29T21:48:52Z",
  "published" : "2025-10-29T21:48:52Z",
  "aliases" : [ "CVE-2025-64095" ],
  "summary" : "DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite",
  "details" : "### Summary\nThe default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files.\n\n### Description\nAn unauthenticated user can upload and replace existing files allowing defacing a website and combined with other issue, injection XSS payloads.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "DNN.PLATFORM"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "10.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-3m8r-w7xg-jqvw"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-64095"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dnnsoftware/Dnn.Platform"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-29T21:48:52Z",
    "nvd_published_at" : "2025-10-28T22:15:38Z"
  }
}