CVE-2025-59706

CriticalUpdated

Published: 25 March 2026

Published

25 March 2026

Modified

25 April 2026

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0031 54.0th percentile

Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-59706 is a critical-severity Authentication Bypass by Spoofing (CWE-290) vulnerability in N2Ws N2W. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 46.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly requires implementation of input validation mechanisms at API request points to prevent remote code execution from specially crafted parameters.

SI-2 Flaw Remediation good match

prevent

Ensures timely flaw remediation by patching the improper API parameter validation vulnerability in affected N2W versions.

SI-9 Information Input Restrictions partial match

prevent

Enforces restrictions on API input parameters such as types, ranges, and formats to block malicious requests that bypass validation.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

Why these techniques?

The vulnerability allows unauthenticated remote code execution via crafted API requests on a public-facing application, directly mapping to T1190: Exploit Public-Facing Application.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

In N2W before 4.3.2 and 4.4.0 before 4.4.1, improper validation of API request parameters enables remote code execution.

Deeper analysisAI

CVE-2025-59706 is a critical vulnerability in N2W software versions prior to 4.3.2 and 4.4.0 prior to 4.4.1, stemming from improper validation of API request parameters that enables remote code execution. Assigned CWE-290, it received a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) upon publication on March 25, 2026.

Remote attackers require only network access to the vulnerable N2W instance, with no authentication, privileges, or user interaction needed. By sending specially crafted API requests, they can achieve arbitrary code execution, resulting in high-impact compromise of confidentiality, integrity, and availability on the affected system.

Vendor advisories, including the security update on the N2W blog and release notes for version 4.3.2, recommend upgrading to N2W 4.3.2 or 4.4.1 to mitigate the issue, as detailed in the referenced documentation.