CVE-2022-32143: CODESYS runtime system prone to directory acces

Severity: medium (CVSS 6.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-24 · updated 2026-06-17
Weakness: CWE-552

Description

In multiple CODESYS products, file download and upload function allows access to internal files in the working directory e.g. firmware files of the PLC. All requests are processed on the controller only if no level 1 password is configured on the controller or if remote attacker has previously successfully authenticated himself to the controller. A successful Attack may lead to a denial of service, change of local files, or drain of confidential Information. User interaction is not required

Affected products

CODESYS PLCWinNT: from 2.0 before 2.4.7.57 — fixed in 2.4.7.57
CODESYS Runtime Toolkit: from 2.0 before 2.4.7.57 — fixed in 2.4.7.57

How to fix

Upgrade to a fixed version: CODESYS PLCWinNT 2.4.7.57; CODESYS Runtime Toolkit 2.4.7.57. Check the vendor advisory for mitigations.

References

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