How to fix CVE-2025-41738?

Within 24 hours: inventory all CODESYS Control deployments and their network exposure; isolate visualization servers from untrusted networks where possible. Within 7 days: implement network segmentation to restrict access to visualization ports, deploy WAF rules to filter malformed requests targeting the visualization service, and establish monitoring for exploitation attempts. Within 30 days: coordinate with CODESYS for patch availability, conduct security assessment of affected systems, and develop incident response procedures specific to this vulnerability.

Is Memory Corruption affected by CVE-2025-41738?

CVE-2025-41738 affects CODESYS Control runtime visualization servers, allowing unauthenticated attackers to trigger denial-of-service conditions.

CVE-2025-41738

EUVD-2025-199975 HIGH

2025-12-01 [email protected]

7.5

CVSS 3.1

CVSS Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 15, 2026 - 13:34 vuln.today

EUVD ID Assigned

Mar 15, 2026 - 13:34 euvd

EUVD-2025-199975

CVE Published

Dec 01, 2025 - 10:16 nvd

HIGH 7.5

Description

An unauthenticated remote attacker may cause the visualisation server of the CODESYS Control runtime system to access a resource with a pointer of wrong type, potentially leading to a denial-of-service (DoS) condition.

Analysis

Technical Context

A denial of service vulnerability allows an attacker to disrupt the normal functioning of a system, making it unavailable to legitimate users. This vulnerability is classified as Access of Resource Using Incompatible Type (Type Confusion) (CWE-843).

Affected Products

Affected products: Codesys Control For Beaglebone Sl, Codesys Control For Empc-A\/Imx6 Sl, Codesys Control For Iot2000 Sl, Codesys Control For Linux Arm Sl, Codesys Control For Linux Sl

Remediation

Implement rate limiting and input validation. Use timeout mechanisms for resource-intensive operations. Deploy DDoS protection where applicable.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +38

POC: 0

CVE-2025-41738 vulnerability details – vuln.today

Back

CVE-2025-41738

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

CVE-2025-41738

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

External POC / Exploit Code