Security readout for executives and security teams
Plain-English summary
CVE-2021-30193 affects CODESYS V2 Web-Server versions before 1.1.9.20. The public record only states an out-of-bounds write condition. That class of memory issue can be serious, but the available bundle does not provide CVSS, impact detail, exploit status, or affected vendor mappings.
Executive priority
Prioritize inventory and version validation, especially in industrial or operational environments. The business urgency is uncertain because severity and exploitation evidence are missing, but the named web-server memory issue should not be left untriaged.
Technical view
The CVE description identifies an out-of-bounds write in CODESYS V2 Web-Server before 1.1.9.20. No CWE, CVSS vector, attack preconditions, privilege requirements, or consequence detail is provided in the source bundle. KEV is false, so active exploitation is not established here.
Likely exposure
Exposure is most likely where CODESYS V2 Web-Server is deployed at a version earlier than 1.1.9.20. The provided affected-products section is incomplete, so teams should rely on asset inventory and CODESYS advisory material to identify installations.
Exploitation context
The provided sources do not state public exploitation, exploitation in the wild, or inclusion in CISA KEV. Treat exploitability as unconfirmed from this bundle, while recognizing that memory corruption in a web server can warrant prompt validation.
Researcher notes
The source bundle is sparse: title and description are identical, affected CPE data is absent, and no CVSS or CWE is listed. Avoid asserting impact beyond an out-of-bounds write in CODESYS V2 Web-Server before 1.1.9.20.
Mitigation direction
- Identify any CODESYS V2 Web-Server deployments and record their versions.
- Upgrade away from versions before 1.1.9.20 where vendor guidance supports it.
- Review the CODESYS customer advisory for product-specific remediation details.
- Restrict web-server access to trusted management networks where operationally possible.
- Monitor vendor guidance for affected product mappings and any revised severity details.
Validation and detection
- Confirm whether CODESYS V2 Web-Server is present in OT and engineering environments.
- Verify installed versions against the before-1.1.9.20 affected range.
- Check whether the web server is reachable from untrusted networks.
- Review change records for vendor updates or compensating controls.
- Track the CVE record for later CVSS, CWE, or advisory updates.
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-2021-30193 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=14726&token=553da5d11234bbe1ceed59969d419a71bb8c8747&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.