How to fix CVE-2025-48466?

Within 24 hours: Identify all Modbus TCP devices and systems in your environment; implement network segmentation to restrict Modbus traffic to authorized sources only; enable logging and monitoring for Modbus TCP connections. Within 7 days: Deploy firewall rules to block unauthorized Modbus TCP access (port 502); conduct security assessment of affected systems to identify exploitation attempts; notify operational and safety teams of the vulnerability. Within 30 days: Implement ICS-specific intrusion detection for Modbus protocol anomalies; evaluate vendor timeline for patches; develop and test incident response procedures for Modbus manipulation scenarios.

Is Modbus affected by CVE-2025-48466?

CVE-2025-48466 allows unauthenticated remote attackers to manipulate industrial control systems (ICS) via Modbus TCP, potentially enabling unauthorized relay control with direct operational and safety consequences.

CVE-2025-48466

EUVD-2025-18993 HIGH

2025-06-24 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4

8.1

CVSS 3.1

CVSS Vector

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 15, 2026 - 22:36 vuln.today

EUVD ID Assigned

Mar 15, 2026 - 22:36 euvd

EUVD-2025-18993

PoC Detected

Jul 09, 2025 - 17:18 vuln.today

Public exploit code

CVE Published

Jun 24, 2025 - 03:15 nvd

HIGH 8.1

Description

Successful exploitation of the vulnerability could allow an unauthenticated, remote attacker to send Modbus TCP packets to manipulate Digital Outputs, potentially allowing remote control of relay channel which may lead to operational or safety risks.

Analysis

CVE-2025-48466 is a security vulnerability (CVSS 8.1). Risk factors: public PoC available.

Technical Context

CWE-863 (Incorrect Authorization). CVSS 8.1 indicates high severity.

Affected Products

['Unspecified product']

Remediation

Monitor vendor channels for patch availability.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +40

POC: +20

CVE-2025-48466 vulnerability details – vuln.today

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CVE-2025-48466

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

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CVE-2025-48466

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

External POC / Exploit Code