Security readout for executives and security teams
Plain-English summary
This flaw can let an unauthenticated network attacker make affected CODESYS V3 systems refuse new communication channel connections. Current sessions continue, but operators, engineers, HMIs, or gateways may be unable to establish new connections when needed.
Executive priority
Treat this as a high-priority availability risk for operational technology using CODESYS V3. It does not indicate takeover, but loss of new engineering or HMI communication can disrupt response and operations. Prioritize internet-facing or broadly reachable deployments first.
Technical view
CVE-2022-30792 is a CWE-400 uncontrolled resource consumption issue in CmpChannelServer and CmpChannelServerEmbedded. It affects multiple CODESYS V3 runtime, gateway, HMI, development, and toolkit products. The CVSS 3.1 score is 7.5, with network attack vector, no privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is most likely where affected CODESYS V3 communication services are reachable from untrusted, routed, vendor, or enterprise networks. Internet exposure would materially increase urgency. The provided sources do not identify specific ports, fixed versions, or deployment prevalence.
Exploitation context
The bundle does not indicate CISA KEV listing or confirmed active exploitation. The issue is remotely reachable and unauthenticated, but the documented impact is denial of new communication channels, not existing-session termination, code execution, or data theft.
Researcher notes
Focus analysis on CmpChannelServer and CmpChannelServerEmbedded resource handling. The source text states existing connections are unaffected, so validation should distinguish new-session denial from full service outage. Patch and mitigation specifics are incomplete in the provided bundle.
Mitigation direction
- Check the CODESYS advisory for affected and fixed versions before changing production systems.
- Update affected CODESYS V3 products according to vendor guidance.
- Restrict CODESYS communication services to trusted engineering and operations networks.
- Block untrusted inbound access to gateways, HMIs, runtimes, and development systems.
- Monitor for abnormal failed connection attempts or channel exhaustion symptoms.
- Coordinate remediation windows for industrial control environments.
Validation and detection
- Inventory CODESYS V3 runtimes, gateways, HMIs, development systems, and listed toolkit deployments.
- Compare installed versions with the CODESYS advisory and asset records.
- Confirm communication services are not reachable from untrusted networks.
- Review firewall rules, remote access paths, and vendor access routes.
- Check monitoring and logs for repeated new-connection failures.
- Document compensating controls where updates cannot be applied promptly.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-30792 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17128&token=bee4d8a57f19be289d623ec90135493b5f9179e3&download=CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.