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SRC: CVELISTV5 / SYNC: T-1M / LAG: 59M / REC: 386,837 / REV: C6-1C / V4

01 RecordSTATE: PUBLISHED

CVE-2022-30791

CODESYS V3: CmpBlkDrvTcp allows unauthenticated attackers to block all its available TCP connections

HighPUBLISHEDCNA: CERTVDE

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

CNA: CERTVDE

CODESYS V3: CmpBlkDrvTcp allows unauthenticated attackers to block all its available TCP connections

03 Exploitation and scoring

SRC: CISA, FIRST, NVD, RED HAT

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.87% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 56.3% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

SCHEMA: 5.1

Published

2022-07-11 10:40Z4 YR AGO

Last updated

2024-09-16 16:48Z1 YR AGO

Reserved

2022-05-16

Assigning CNA

CERTVDE

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

751cc0726e34d1cf48f18125e7e99c487286c0200580310df5778141bc655a64

05 Affected products

PAIRS: 21

VendorProductVersionsPlatforms

CODESYSCODESYS Control RTE (SL)V3 to < V3.5.18.20—

CODESYSCODESYS Control RTE (for Beckhoff CX) SLV3 to < V3.5.18.20—

CODESYSCODESYS Control Win (SL)V3 to < V3.5.18.20—

CODESYSCODESYS GatewayV3 to < V3.5.18.20—

CODESYSCODESYS Edge Gateway for WindowsV3 to < V3.5.18.20—

CODESYSCODESYS HMI (SL)V3 to < V3.5.18.20—

CODESYSCODESYS Development System V3V3 to < V3.5.18.10—

CODESYSCODESYS Control Runtime System ToolkitV3 to < V3.5.18.20—

CODESYSCODESYS Embedded Target Visu ToolkitV3 to < V3.5.18.20—

CODESYSCODESYS Remote Target Visu ToolkitV3 to < V3.5.18.20—

CODESYSCODESYS Control for BeagleBone SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for Beckhoff CX9020 SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for emPC-A/iMX6 SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for IOT2000 SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for Linux SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for PFC100 SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for PFC200 SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for PLCnext SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for Raspberry Pi SLV3 to < V4.5.0.0—

CODESYSCODESYS Control for WAGO Touch Panels 600 SLV3 to < V4.5.0.0—

CODESYSCODESYS Edge Gateway for LinuxV3 to < V4.5.0.0—

06 References

REFS: 1

customers.codesys.comhttps://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17128&token=bee4d8a57f19be289d623ec90135493b5f9179e3&download=x_refsource_CONFIRM