# CVE-2025-52488: DNN.Platform - Information Disclosure

> Live exploitation tracking for CVE-2025-52488 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2025-52488

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 8.6
- **Public exploit available:** Yes
- **Affected products:** DNNsoftware DNN.Platform
- **Weaknesses:** CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)
- **Tags:** cms, windows

## Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. In versions 6.0.0 to before 10.0.1, DNN.Platform allows a specially crafted series of malicious interaction to potentially expose NTLM hashes to a third party SMB server. This issue has been patched in version 10.0.1.

## CrowdSec analysis

[CVE-2025-52488](https://euvd.enisa.europa.eu/vulnerability/CVE-2025-52488) is a vulnerability in DNN (DotNetNuke) versions 6.0.0 to before 10.0.1 that could allow attackers to expose NTLM hashes by leveraging specially crafted malicious interactions. This flaw could be exploited to facilitate credential theft or relay attacks by sending the hashes to a third-party SMB server. The issue has been addressed in version 10.0.1.

CrowdSec has been tracking this vulnerability and its exploits since 16th of July 2025.

CrowdSec network observations suggest that most exploitation of CVE-2025-52488 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental.
Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2025-52488 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2025-52488 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Attackers exploit the DNN file upload endpoint with crafted Unicode paths to trigger NTLM hash disclosure, targeting `/Providers/HtmlEditorProviders/DNNConnect.CKE/Browser/FileUploader.ashx` with specific query parameters.

## Timeline

- 2025-06-21: CVE Published. CVE-2025-52488 is published to NVD.
- 2025-07-16: Rule Released. CrowdSec releases a rule to detect CVE-2025-52488 exploitation attempts against the CrowdSec Network.
- 2025-07-21: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2025-52488 for the first time.

## References

- https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-mgfv-2362-jq96
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-52488.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2025-52488) follows observed exploitation activity for CVE-2025-52488. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.