CVE-2022-30792· NVD / CVE Program· CNA CERTVDE

CODESYS: CmpChannelServer, CmpChannelServerEmbedded allow unauthenticated attackers to block all their available communication channels

Noroxi assessment

Priority: Monitor (action score 30/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.89% (FIRST EPSS); higher than 59% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In CmpChannelServer of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorized attacker to block new communication channel connections. Existing connections are not affected.

HighCVSS 7.5 · v3.1—No exploit No fix recorded

Published: Jul 11, 2022
Updated: Jun 17, 2026
EPSS: 0.8% · 59th percentile
CWE: CWE-400

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.8%

CNA vs NVD score

NVD: —
CNA · CERTVDE: 7.5; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
codesys	control for beaglebone	cpe:2.3:a:codesys:control_for_beaglebone
codesys	control for empc-a\/imx6	cpe:2.3:a:codesys:control_for_empc-a\/imx6
codesys	control for iot2000 sl	cpe:2.3:a:codesys:control_for_iot2000_sl
codesys	control for linux sl	cpe:2.3:a:codesys:control_for_linux_sl
codesys	control for pfc100 sl	cpe:2.3:a:codesys:control_for_pfc100_sl
codesys	control for pfc200 sl	cpe:2.3:a:codesys:control_for_pfc200_sl
codesys	control for plcnext	cpe:2.3:a:codesys:control_for_plcnext
codesys	control for raspberry pi sl	cpe:2.3:a:codesys:control_for_raspberry_pi_sl
codesys	control for wago touch panels 600	cpe:2.3:a:codesys:control_for_wago_touch_panels_600
codesys	control rte sl	cpe:2.3:a:codesys:control_rte_sl
codesys	control rte sl \(for beckhoff cx\)	cpe:2.3:a:codesys:control_rte_sl_\(for_beckhoff_cx\)
codesys	control runtime system toolkit	cpe:2.3:a:codesys:control_runtime_system_toolkit

and 7 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

codesys control for beaglebonebefore 4.5.0.0
codesys control for empc-a/imx6before 4.5.0.0
codesys control for iot2000 slbefore 4.6.0.0
codesys control for linux slbefore 4.5.0.0
codesys control for pfc100 slbefore 4.5.0.0
codesys control for pfc200 slbefore 4.5.0.0
codesys control for plcnextbefore 4.6.0.0
codesys control for raspberry pi slbefore 4.5.0.0
codesys control for wago touch panels 600before 4.5.0.0
codesys control rte slbefore 3.5.18.20
codesys control rte sl (for beckhoff cx)before 3.5.18.20
codesys control runtime system toolkitbefore 3.5.18.20
codesys control winbefore 3.5.18.20
codesys development systembefore 3.5.18.20
codesys edge gatewaybefore 3.5.18.20
codesys edge gatewaybefore 4.5.0.0
codesys embedded target visu toolkitbefore 3.5.18.20
codesys gatewaybefore 3.5.18.20
codesys hmibefore 3.5.18.20
codesys remote target visu toolkitbefore 3.5.18.20

Versions reported by the vendor

Affected version ranges reported by the assigning authority (CERTVDE). Independent of NVD's CPE analysis and usually ahead of it.

CODESYS CODESYS Control for BeagleBone SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for Beckhoff CX9020 SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for emPC-A/iMX6 SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for IOT2000 SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for Linux SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for PFC100 SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for PFC200 SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for PLCnext SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for Raspberry Pi SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control for WAGO Touch Panels 600 SL
- V3 and later · before V4.5.0.0affected
CODESYS CODESYS Control RTE (for Beckhoff CX) SL
- V3 and later · before V3.5.18.20affected
CODESYS CODESYS Control RTE (SL)
- V3 and later · before V3.5.18.20affected

Same product

codesys: all records

Other highest-scoring records for the same primary product.

CVE-2019-13548CODESYS V3 web server, all versions prior to 3.5.14.10, allows an attacker to send specially crafted http or https requests which could caus
41Plan
CVE-2020-10245CODESYS V3 web server before 3.5.15.40, as used in CODESYS Control runtime systems, has a buffer overflow.
40Plan
CVE-2019-18858CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.
40Plan

Published before and after this one in the same product

← EarlierCVE-2020-15806Jul 22, 2020 · CODESYS Control runtime system before 3.5.16.10 allows Uncontrolled Memory Allocation.
31Monitor
← EarlierCVE-2022-30791Jul 11, 2022 · CODESYS V3: CmpBlkDrvTcp allows unauthenticated attackers to block all its available TCP connections
30Monitor
Later →CVE-2020-12069Dec 26, 2022 · CODESYS V3 prone to Inadequate Password Hashing
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

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

nvd-secondary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Endpoint Denial of ServiceT1499

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

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

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records