How severe is CVE-2025-52485?

No CVSS score has been assigned to CVE-2025-52485 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-52485?

CVE-2025-52485 affects the following packages: DNN.PLATFORM (NuGet). Ecosystems affected: NuGet.

How do I fix CVE-2025-52485?

Update DNN.PLATFORM to 10.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-52485 is resolved across your whole dependency graph.

How do I detect CVE-2025-52485 in my NuGet dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for DNN.PLATFORM, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2025-52485 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2025-52485 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-52485 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-52485?

CVE-2025-52485 has an EPSS (Exploit Prediction Scoring System) score of 0.2%, placing it in the 12th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2025-52485?

CVE-2025-52485 is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2025-52485 published, and has it been updated?

CVE-2025-52485 was published on June 21, 2025 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2025-52485: DNN.PLATFORM

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-52485.

EPSS Exploitation Probability

via FIRST.org ↗

0.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs12th percentile — riskier than 12% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

.NETDNN.PLATFORM

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. In versions 6.0.0 to before 10.0.1, DNN.PLATFORM allows a specially crafted request to inject scripts in the Activity Feed Attachments endpoint which will then render in the feed. This issue has been patched in version 10.0.1.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`DNN.PLATFORM`	≥ 6.0.0&&< 10.0.1	10.0.1`dotnet add package DNN.PLATFORM --version 10.0.1`

Affected Products

1 product · 1 configurations

Application

dotnetnukednnsoftware

≥ 6.0.0 && < 10.0.1

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for DNN.PLATFORM, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update DNN.PLATFORM to 10.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-52485 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. In versions 6.0.0 to before 10.0.1, DNN.PLATFORM allows a specially crafted request to inject scripts in the Activity Feed Attachments endpoint which will then render in the feed. This issue has been patched in version 10.0.1.

O3 Security · Impact-Aware SCA

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CVE-2025-52485 — DNN.PLATFORM