CVE-2025-64095
Prior to 10.1.1, the default HTML editor provider allows unauthenticated file uploads and images can overwrite existing files.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 47.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 46.97% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- dnnsoftware/dotnetnuke
- Source
- security-advisories@github.com
EPSS moved from 47.0% on 28 September 2026 to 47.0% on 31 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.