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CVE-2022-22516

CODESYS driver SysDrv3S allows SYSTEM users on Microsoft Windows to read and write in restricted memory space.

HIGH
7.8
CVSS Score
Published: April 7, 2022 at 06:21 PM UTC
Updated: June 17, 2026 at 04:28 AM UTC
5 products affected across 1 vendorControl Win (SL)Control RTE (SL)Control Rte Sl (for Beckhoff Cx )· also runs on 1 platform

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%

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

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

Control RTE (SL)· Codesys
95%
v < 3.5.18.0v < V3.5.18.03.5.18.0
Affected range stops below 3.5.18.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V3.5.18.0, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
Control Rte Sl (for Beckhoff Cx )· Codesys
95%
v < 3.5.18.0v < V3.5.18.03.5.18.0
Affected range stops below 3.5.18.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V3.5.18.0, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
Control Win (SL)· Codesys
95%
v < 3.5.18.0v < V3.5.18.03.5.18.0
Affected range stops below 3.5.18.0, so it looks safe — our inference, not a vendor statement
Affected range stops below V3.5.18.0, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
Development System· Codesys
95%
v < 3.5.18.0
Affected range stops below 3.5.18.0, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
Development System V3· Codesys
60%
v < V3.5.18.03.5.18.0
Affected range stops below V3.5.18.0, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17090&token=6cd08b169916366df31388d2e7ba58e7bce93508&download=

CVSS

7.8HIGHCERTVDE
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-732

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