CVE-2025-41691

CODESYS Control DoS via Unauthenticated NULL Pointer Dereference

Published Aug 4, 2025 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
An unauthenticated remote attacker may trigger a NULL pointer dereference in the affected CODESYS Control runtime systems by sending specially crafted communication requests, potentially leading to a denial-of-service (DoS) condition.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-23490 An unauthenticated remote attacker may trigger a NULL pointer dereference in the affected CODESYS Control runtime systems by sending specially crafted communication requests, potentially leading to a denial-of-service (DoS) condition.
History
Type Values Removed Values Added
First Time appeared Codesys
Codesys control
Vendors & Products Codesys
Codesys control
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An unauthenticated remote attacker may trigger a NULL pointer dereference in the affected CODESYS Control runtime systems by sending specially crafted communication requests, potentially leading to a denial-of-service (DoS) condition.
Title CODESYS Control DoS via Unauthenticated NULL Pointer Dereference
Weaknesses CWE-476
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Aug 4, 2025, 4:32 PM
Reserved
Apr 16, 2025, 11:17 AM
Status
Deferred
Published
Aug 4, 2025, 8:15 AM
Modified
Jun 17, 2026, 9:22 AM