DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
Priority HIGH 79CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-434.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.4697 98th percentileScored 2026-11-07
Fix Fixed Dnn.Platform (dnnsoftware): 10.1.1DNN.PLATFORM (NuGet): 10.1.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| DotNetNuke (DNN) | Dnn.Platform | before 10.1.1 | 10.1.1 | Patch available | CNA |
| — | DNN.PLATFORM (NuGet) | before 10.1.1 | 10.1.1 | Patch available | GHSA-3m8r-w7xg-jqvw |
- Dnn.Platform VendorDotNetNuke (DNN) Affected before 10.1.1 Fixed in 10.1.1 Patch available CNA
- DNN.PLATFORM (NuGet) Vendor— Affected before 10.1.1 Fixed in 10.1.1 Patch available GHSA-3m8r-w7xg-jqvw
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:* | before 10.1.1 | Vulnerable | DotNetNuke (DNN) |
- cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:* Versions before 10.1.1 Vulnerable ·DotNetNuke (DNN)
Remediation
- Fix · CNA Dnn.Platform (dnnsoftware) Fixed in 10.1.1
- Fix · GHSA-3m8r-w7xg-jqvw DNN.PLATFORM (NuGet) Fixed in 10.1.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-64095
- 2026-10-03 Alias added: GHSA-3m8r-w7xg-jqvw
References
More DotNetNuke (DNN) Dotnetnuke vulnerabilities
- TI-2017-07201 Code injection in DotNetNuke CMS Fixed in 9.1.1 KEVCVSS 3.1HIGH 8.8
- TI-2018-12944 DNN (aka DotNetNuke) 9.2 through 9.2.2 uses a weak encryption algorithm to protect input… KEVCVSS 3.1HIGH 7.5
- TI-2018-11271 DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters. KEVCVSS 3.1HIGH 7.5
- TI-2015-02468 The installation wizard in DotNetNuke (DNN) before 7.4.1 allows remote attackers to… CVSS 3.0CRITICAL 9.8
- TI-2018-12945 DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values… CVSS 3.1HIGH 7.5
- TI-2025-32614 DNN.PLATFORM leaks NTLM hash via SMB Share Interaction with malicious user input CVSS 3.1HIGH 8.6
Sources
- CVE-2025-64095 · CVE Program
- CVE-2025-64095 · NVD
- FIRST EPSS
- GHSA-3m8r-w7xg-jqvw · GitHub Advisory Database · CC BY 4.0
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