Security readout for executives and security teams
Plain-English summary
CVE-2020-20486 describes a stack-buffer overflow in IEC104 v1.0 involving the Iec10x_Sta_Addr parameter. The public record does not provide severity, affected vendor details, or a confirmed fix, so urgency depends on whether this code exists in operational systems.
Executive priority
Prioritize inventory and exposure confirmation before escalation. This is potentially serious because stack overflows can affect reliability and control systems, but the public evidence lacks severity scoring, product mapping, and exploitation confirmation.
Technical view
The CVE record states that IEC104 v1.0 contains a stack-buffer overflow in Iec10x_Sta_Addr. Available sources do not document CVSS, CWE, CPEs, attack requirements, authentication context, patch status, or proven impact beyond the memory-safety class.
Likely exposure
Exposure is most plausible where IEC104 v1.0, the referenced GitHub project, or derived code is used. The source bundle does not identify packaged products, vendors, distributions, or deployed environments.
Exploitation context
No CISA KEV listing is present, and the provided sources do not cite active exploitation. Public evidence is limited to the CVE description and referenced GitHub issue, so exploit maturity and real-world use are unconfirmed.
Researcher notes
The record is sparse: no CVSS, CWE, CPE, fixed version, exploit status, or detailed impact is provided. Analysis should stay bounded to the named IEC104 v1.0 issue and avoid assuming broader product exposure.
Mitigation direction
- Inventory systems and codebases for IEC104 v1.0 or derivatives.
- Check the referenced project and any vendor guidance for fixes.
- Restrict access to IEC104 services to trusted management networks.
- Apply segmentation and monitoring around operational technology hosts.
- Treat unexpected IEC104 process crashes as security-relevant signals.
Validation and detection
- Confirm whether Iec10x_Sta_Addr exists in deployed source or binaries.
- Identify any internet- or partner-reachable IEC104 interfaces.
- Review dependency records for the referenced IEC104 project.
- Check whether maintainers or vendors have published remediation guidance.
- Document compensating controls where no patch is available.
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
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CVE-2020-20486 mapping review
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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://github.com/airpig2011/IEC104/issues/14CVE 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.