CVE-2025-64095

DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite

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.

Affected

dnnsoftware · Dnn.Platform

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 GITHUB

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

EPSS

46.97% chance of exploitation in the next 30 days, 99th percentile

Nuclei

critical

Published

2025-10-28

Updated

2025-10-29

Proof-of-concept exploits (3)

• 0xr2r/CVE-2025-640950★ · 2026-01-04
• NationalServices/CVE-2025-64095-DotNetNuke-DNN_PoC5★ · 2025-11-06
• h4x0r-dz/CVE-2025-64095---DNN-Unauthenticated-arbitrary-file-upload14★ · 2025-10-31

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-64095.yaml

Security advisories

• dnnsoftware/Dnn.Platform/security/advisories/GHSA-3m8r-w7xg-jqvw
• advisories/GHSA-3m8r-w7xg-jqvw

References

• CVE Record
• NVD entry

Related

• CVE-2017-11317
• CVE-2024-3400
• CVE-2024-4367
• CVE-2021-26855
• CVE-2023-27997
• CVE-2024-21762