CVE-2025-64095 (GCVE-0-2025-64095)
Vulnerability from cvelistv5 – Published: 2025-10-28 21:46 – Updated: 2025-10-29 14:51Title
DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
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.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/dnnsoftware/Dnn.Platform/secur… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dnnsoftware | Dnn.Platform |
Affected:
< 10.1.1
|
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 7b9d2e33-01ab-49b1-b90a-d771f8f121ee
Exploited: Yes
Characteristics
Severity:
98.0
Timestamps
First Seen: 2026-02-23
Asserted: 2026-02-23
Last Seen: 2026-07-08
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: DNN Corp / DNN (DotNetNuke) | Class: cms | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-07-08: 2
Evidence
Type: Honeypot
Signal: In The Wild Attempts
Confidence: 70%
Source: shadowserver
Details
| 1D | 2 |
|---|---|
| Iot | no |
| Feed | Shadowserver Foundation honeypot/exploited-vulnerabilities |
| Type | http-scan |
| Class | cms |
| 7D Avg | 0 |
| Vendor | DNN Corp |
| 30D Avg | 0 |
| 90D Avg | 1 |
| Product | DNN (DotNetNuke) |
| Cisa Kev | no |
| Connections | 2 |
| Observation Date | 2026-07-08 |
| Vulnerability Class | CVSS |
| Vulnerability Score | 9.8 |
| Vulnerability Severity | Critical |
References
Created: 2026-06-30 09:23 UTC
| Updated: 2026-07-10 01:00 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f5403545-e76e-4e05-bc06-eae176a792ca
Exploited: Yes
Timestamps
First Seen: 2025-10-28
Asserted: 2025-10-28
Scope
Notes: KEVIntel entry: DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite | Affected: dnnsoftware / Dnn.Platform | CVSS: 10.0 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite |
| Vendor | dnnsoftware |
| Product | Dnn.Platform |
| Added Date | 2025-10-28T21:46:11.000Z |
| Cvss Score | 10.0 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-06-23 14:03 UTC
| Updated: 2026-07-10 06:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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