What is the CVSS score of CVE-2025-52488?

CVE-2025-52488 has a CVSS 3.1 base score of 8.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N. EPSS exploitation probability: 14.8%.

Is there a public PoC exploit available for CVE-2025-52488?

Yes, a public proof-of-concept exploit is available for CVE-2025-52488. Prioritise patching immediately. EPSS: 14.8%.

How to fix or mitigate CVE-2025-52488?

Within 24 hours: Inventory all DNN installations and identify those running versions 6.0.0-10.0.0; disable SMB functionality if not required and isolate DNN servers from untrusted networks. Within 7 days: Implement network segmentation to restrict DNN server outbound SMB connections; deploy WAF rules to block suspicious request patterns targeting authentication endpoints; conduct credential audit for accounts with DNN access. Within 30 days: Upgrade to DNN 10.0.1 or later when available; consider application-level compensating controls or migration alternatives if upgrade timeline extends beyond patch availability.

Dotnetnuke CVE-2025-52488

HIGH

Information Exposure (CWE-200)

2025-06-21 security-advisories@github.com

GHSA-mgfv-2362-jq96

Information Disclosure Microsoft Dotnetnuke Dnnsoftware

8.6

CVSS 3.1 · GitHub Advisory

View

Vulnerability Assessment

Weakness	CWE CWE-200 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V14 - Data Protection Data exposure prevention MITRE ATT&CK 2 techniques across 2 tactics: Collection, Discovery The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 8.6, EPSS 14.8%, PoC available. DNN is a major .NET CMS platform. The captured NTLM hash belongs to the IIS application pool identity, which may be a domain account with additional privileges. Hash cracking with modern GPUs is fast for weak passwords.
Exploit ScenarioDerived	An attacker crafts a series of requests that force DNN to connect to their SMB server. They capture the NTLMv2 hash of the DNN service account. Using hashcat with GPU acceleration, they crack the hash. If the service account is a domain account, they use the credentials for lateral movement.

Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.

Patch available 14.8% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 15, 2026

DNN (DotNetNuke) CMS versions 6.0.0 through 10.0.0 contain a vulnerability that can expose NTLM hashes to a third-party SMB server. Through a specially crafted series of interactions, an attacker can force the DNN server to authenticate to an attacker-controlled SMB server, capturing NTLM credential hashes for offline cracking.

Earlier versions of this analysis (1)

v1 Mar 15, 2026 - 21:35 CVSS 8.6

NTLM hash exposure in DNN CMS via forced SMB authentication enables offline credential cracking.

RemediationAI

Update to DNN 10.0.1 or later. Block outbound SMB (port 445) from web servers. Use a local service account (not domain account) for the IIS application pool. Implement SMB signing.

Affected Packages

nuget dnn.platform fix: 10.0.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in nuget

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability allows an attacker to trigger the DNN server to make an outbound SMB connection to an attacker-controlled server. Windows automatically sends NTLM authentication credentials during SMB connections. The attacker captures the NTLMv2 hash and cracks it offline using tools like hashcat, recovering the service account's plaintext password.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 8.6 HIGH

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

PoC Detected

Sep 15, 2025 - 15:21 vuln.today

Public exploit code

CVE Published

Jun 21, 2025 - 03:15 nvd

HIGH 8.6

DescriptionGitHub Advisory

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 series of malicious interaction to potentially expose NTLM hashes to a third party SMB server. This issue has been patched in version 10.0.1.

Executive ViewAI

Why It Matters

DNN CMS installations (versions 6.0.0-10.0.0) face a credential exposure vulnerability that could allow attackers to capture NTLM password hashes through specially crafted requests, potentially compromising Active Directory credentials. Organizations running affected DNN versions require immediate assessment and mitigation as no patch is currently available.

Business Impact: High

Compensating Controls

Disable SMB/NTLM authentication protocols on DNN servers if operationally feasible; implement network segmentation to prevent DNN servers from reaching external SMB endpoints; deploy Web Application Firewall rules to detect and block exploitation attempts targeting authentication mechanisms; restrict DNN administration access to trusted networks only; enforce multi-factor authentication for all DNN administrative accounts; monitor outbound SMB traffic (ports 139, 445) from DNN servers for anomalies.

Threat Intelligence Overview

EPSS Score

14.8%

Top 6% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS POC (1)

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 14.8%

Patch available Yes

Active threat Yes

Deciding rule

HIGH severity + EPSS > 10%

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +15

CVSS: +43

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.