What is the CVSS score of CVE-2024-3982?

CVE-2024-3982 has a CVSS 3.1 base score of 8.2 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Microscada X Sys600 CVE-2024-3982

HIGH

Authentication Bypass by Capture-replay (CWE-294)

2024-08-27 cybersecurity@hitachienergy.com

Information Disclosure Microscada X Sys600 Hitachienergy

8.2

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-294 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Replay attack prevention
Impact	CVSS score of 8.2 (HIGH). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required.
Exploit ScenarioDerived	Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: Active threat signals + CRITICAL/HIGH severity.

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

An attacker with local access to machine where MicroSCADA X SYS600 is installed, could enable the session logging supporting the product and try to exploit a session hijacking of an already. Rated high severity (CVSS 8.2), this vulnerability is 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.

Affects your stack

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

Technical ContextAI · show details

This vulnerability is classified under CWE-294. An attacker with local access to machine where MicroSCADA X SYS600 is installed, could enable the session logging supporting the product and try to exploit a session hijacking of an already established session. By default, the session logging level is not enabled and only users with administrator rights can enable it. Affected products include: Hitachienergy Microscada X Sys600.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

An attacker with local access to machine where MicroSCADA X SYS600 is installed, could enable the session logging supporting the product and try to exploit a session hijacking of an already established session. By default, the session logging level is not enabled and only users with administrator rights can enable it.

Threat Intelligence Overview

EPSS Score

0.2%

Top 88% exploitable

Threat Intel

1 source

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS CISA

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 No

EPSS 0.2%

Patch available No

Active threat Yes

Deciding rule

Active threat signals + CRITICAL/HIGH 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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +41

PoC: 0

Weaponized: 0

Threat intel: +10

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.