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CVE-2023-3670

Codesys: Vulnerability in CODESYS Development System and CODESYS Scripting

HIGH
7.3
CVSS Score
Published: July 28, 2023 at 07:52 AM UTC
Updated: June 17, 2026 at 06:14 AM UTC
2 products affected across 1 vendorDevelopment SystemScripting

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Severity
HIGH7.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In CODESYS Development System 3.5.9.0 to 3.5.17.0 and CODESYS Scripting 4.0.0.0 to 4.1.0.0 unsafe directory permissions would allow an attacker with local access to the workstation to place potentially harmful and disguised scripts that could be executed by legitimate users.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Development System· Codesys
95%
3.5.9.0 ≤ v < 3.5.17.03.5.9.0
Affected range stops below 3.5.17.0, so it looks safe — our inference, not a vendor statement
Scripting· Codesys
95%
4.0.0.0 ≤ v < 4.1.0.04.0.0.0
Affected range stops below 4.1.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party Advisory
Source: [email protected]
https://cert.vde.com/en/advisories/VDE-2023-024

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCERTVDE
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-668

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