Security readout for executives and security teams
Plain-English summary
CVE-2021-30195 affects CODESYS V2 runtime systems earlier than 2.4.7.55. The public record only says improper input validation, so business impact cannot be precisely ranked from the supplied evidence. Because CODESYS runtimes can sit in industrial control environments, unknown exposure should be treated seriously until asset owners confirm versions.
Executive priority
Prioritize asset discovery and vendor confirmation. Escalate if CODESYS V2 is present in production industrial systems, especially where runtime updates depend on an OEM or operational outage window.
Technical view
The source bundle identifies improper input validation in CODESYS V2 runtime before 2.4.7.55. No CVSS vector, CWE, detailed attack surface, exploit conditions, or affected OEM product list is provided. The version boundary implies systems on 2.4.7.55 or later are outside the described vulnerable range.
Likely exposure
Exposure is likely limited to environments running CODESYS V2 runtime before 2.4.7.55, including OEM devices embedding that runtime. The supplied data does not identify specific vendors, models, ports, configurations, or internet-facing prevalence.
Exploitation context
The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. It also does not provide exploit maturity, prerequisites, authentication requirements, or impact details, so exploitation context remains incomplete.
Researcher notes
The public evidence is thin: no CVSS, CWE, affected CPEs, exploitation status, or technical detail beyond improper input validation and the version cutoff. Avoid assuming impact or exploitability without the linked CODESYS advisory or OEM-specific documentation.
Mitigation direction
- Inventory systems that run CODESYS V2 runtime.
- Upgrade affected runtimes to 2.4.7.55 or later where supported.
- Review CODESYS customer guidance for official remediation details.
- Ask OEM device vendors for firmware guidance where CODESYS is embedded.
- Track and risk-accept any systems that cannot be updated.
Validation and detection
- Confirm each runtime version against the 2.4.7.55 boundary.
- Map CODESYS V2 deployments to owners and business processes.
- Check vendor or OEM advisories for product-specific applicability.
- Verify remediation records for upgraded or replaced runtimes.
- Document remaining unknowns, especially unmanaged industrial assets.
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.
CVE-2021-30195 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://customers.codesys.com/index.phpCVE reference · x_refsource_MISC
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14725&token=08691519ef764b252630759eff925890176ecd78&download=CVE reference · x_refsource_MISC
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.