DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. In versions 7.0.0 to before 10.0.1, DNN.PLATFORM allows a specially crafted request or proxy to be created that could bypass the design of DNN Login IP Filters allowing login attempts from IP Addresses not in the allow list. This issue has been patched in version 10.0.1.
CVE ID: CVE-2025-52487
CVSS Base Severity: HIGH
CVSS Base Score: 8.8
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Vendor: dnnsoftware
Product: Dnn.Platform
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 16.31% (scored less or equal to compared to others)
EPSS Date: 2025-06-26 (when was this score calculated)