CVE-2024-50357

CRITICAL

Incorrect Provision of Specified Functionality (CWE-684)

2024-11-29 vultures@jpcert.or.jp

9.8

CVSS 3.0 · Vendor: jpcert

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Vulnerability Assessment

Weakness	CWE CWE-684 ASVS 5.0 V15 - Secure Coding and Architecture Incorrect provision of specified functionality
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

FutureNet NXR series routers provided by Century Systems Co., Ltd. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected ProductsAI

See vendor advisory for affected versions.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-684. FutureNet NXR series routers provided by Century Systems Co., Ltd. have REST-APIs, which are configured as disabled in the initial (factory default) configuration. But, REST-APIs are unexpectedly enabled when the affected product is powered up, provided either http-server (GUI) or Web authentication is enabled. The factory default configuration makes http-server (GUI) enabled, which means REST-APIs are also enabled. The username and the password for REST-APIs are configured in the factory default configuration. As a result, an attacker may obtain and/or alter the affected product's settings via REST-APIs.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (jpcert) PRIMARY 9.8 CRITICAL

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

Primary rating from Vendor (jpcert) · only source for this CVE.

CVSS VectorVendor: jpcert

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

FutureNet NXR series routers provided by Century Systems Co., Ltd. have REST-APIs, which are configured as disabled in the initial (factory default) configuration. But, REST-APIs are unexpectedly enabled when the affected product is powered up, provided either http-server (GUI) or Web authentication is enabled. The factory default configuration makes http-server (GUI) enabled, which means REST-APIs are also enabled. The username and the password for REST-APIs are configured in the factory default configuration. As a result, an attacker may obtain and/or alter the affected product's settings via REST-APIs.

Threat Intelligence Overview

EPSS Score

0.6%

Top 58% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 CRITICAL

CISA KEV No

Public POC No

EPSS 0.6%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

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

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +49

PoC: 0

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.