Critical severity · published Oct 28, 2025
CVE-2025-64095
DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
9.8
CVSS
47%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)47.0% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
Dnn.Platform · dnnsoftware
< 10.1.1 · source: vendor
DO
Dotnetnuke · Dnnsoftware
before 10.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64095
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64095
Vendor Advisory
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-3m8r-w7xg-jqvw
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