CVE-2022-22516: CODESYS driver SysDrv3S allows SYSTEM users on Microsoft Windows to read and write in restricted memory space.

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-04-07 · updated 2026-06-17
Weakness: CWE-732

Description

The SysDrv3S driver in the CODESYS Control runtime system on Microsoft Windows allows any system user to read and write within restricted memory space.

Affected products

CODESYS Control RTE (SL): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Control Rte Sl (For Beckhoff Cx): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Control Win (SL): before 3.5.18.0 — fixed in 3.5.18.0
CODESYS Development System: before 3.5.18.0 — fixed in 3.5.18.0

How to fix

Upgrade to a fixed version: CODESYS Control RTE (SL) 3.5.18.0; CODESYS Control Rte Sl (For Beckhoff Cx) 3.5.18.0; CODESYS Control Win (SL) 3.5.18.0; CODESYS Development System 3.5.18.0. Check the vendor advisory for mitigations.

References

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