CVE-2022-31803

CODESYS Gateway Server V2 prone to Denial of Service Attack

MEDIUM
5.3
CVSS Score
Published: June 24, 2022 at 07:46 AM UTC
Updated: June 17, 2026 at 04:46 AM UTC
1 product affected across 1 vendorGateway

Using CODESYS Gateway Server V2 by CODESYS?

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

Description

In CODESYS Gateway Server V2 an insufficient check for the activity of TCP client connections allows an unauthenticated attacker to consume all available TCP connections and prevent legitimate users or clients from establishing a new connection to the CODESYS Gateway Server V2. Existing connections are not affected and therefore remain intact.

Affected

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

2.0 ≤ v < 2.3.9.38V2 ≤ v < V2.3.9.382
Affected range stops below 2.3.9.38, so it looks safe — our inference, not a vendor statement
Affected range stops below V2.3.9.38, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

CVSS

5.3MEDIUMCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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