CVE-2025-64095

Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to 10.1.1, the default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files. An unauthenticated user can upload and replace existing files allowing defacing a website and combined with other issue, injection XSS payloads. This vulnerability is fixed in 10.1.1.

CVSS v3.1 Score

10.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
dnnsoftware	dotnetnuke	< 10.1.1

References

Advisories & Patches

https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-3m8r-w7xg-jqvw

Frequently Asked Questions

What is CVE-2025-64095? +

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to 10.1.1, the default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files. An unauthenticated user can upload and replace existing files allowing defacing a website and combined with other issue, injection XSS payloads. This vulnerability is fixed in 10.1.1. It has a CVSS v3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2025-64095? +

CVE-2025-64095 has a CVSS v3.1 score of 10.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-64095? +

CVE-2025-64095 affects products from dnnsoftware, specifically: dotnetnuke. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-64095? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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