Security readout for executives and security teams
Plain-English summary
CVE-2020-18730 describes a crash condition in IEC104 v1.0. An attacker may be able to trigger a segmentation violation and cause denial of service. The public record does not provide CVSS, affected vendor details, patch status, or evidence of exploitation.
Executive priority
Treat this as an availability risk with incomplete public detail. Prioritize asset discovery first, then reduce exposure or patch if IEC104 v1.0 is present in production, especially where outages would affect operations.
Technical view
The flaw is reported in the Iec104_Deal_I function of IEC104 v1.0 and results in a segmentation violation causing DoS. The source references CWE-476, but the CVE metadata has no populated CWE, CPE, or CVSS details.
Likely exposure
Exposure is only supported for environments using IEC104 v1.0 or code containing Iec104_Deal_I. The CVE record lists vendor, product, versions, and CPEs as unavailable, so exposure must be verified by inventory and source review.
Exploitation context
CISA KEV status is false in the provided bundle, and no cited source states active exploitation. Public evidence only supports a denial-of-service crash condition, not remote code execution or confirmed weaponization.
Researcher notes
The public record is sparse: no CVSS, CPE, vendor advisory, or confirmed fix is included. The GitHub issue is the primary technical reference. Avoid assuming broader IEC104 protocol implementations are affected without code-level evidence.
Mitigation direction
- Check the upstream GitHub issue and vendor guidance for any fixed release or workaround.
- Restrict network access to services or systems using IEC104 v1.0 where possible.
- Monitor affected services for unexplained crashes, restarts, or availability degradation.
- Prioritize replacement or patching if the code is deployed in operational environments.
Validation and detection
- Inventory applications, repositories, and dependencies for IEC104 v1.0 usage.
- Look for the Iec104_Deal_I function in deployed or maintained source code.
- Confirm whether exposed services parse traffic through the affected IEC104 code path.
- Review operational logs for segmentation faults or recurring process crashes.
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-2020-18730 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://cwe.mitre.org/data/definitions/476.htmlCVE reference · x_refsource_MISC
- https://github.com/airpig2011/IEC104/issues/4CVE 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.