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CVE Record

CVE-2020-18734: A stack buffer overflow in /ddsi/q_bitset.h of Eclipse IOT Cyclone DDS Project v0.1.0 causes the DDS subscr...

A stack buffer overflow in /ddsi/q_bitset.h of Eclipse IOT Cyclone DDS Project v0.1.0 causes the DDS subscriber server to crash.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-18734 describes a stack buffer overflow in Eclipse Cyclone DDS v0.1.0 that can crash a DDS subscriber server. The public data does not provide a CVSS score, confirmed affected CPEs, or a named fixed version. Treat it as an availability risk for systems using this specific Cyclone DDS release.

Executive priority

Prioritize assessment if DDS supports production, robotics, IoT, or operational systems where subscriber crashes affect service continuity. Without confirmed exploitation or severity scoring, this is not automatically an emergency, but unsupported vulnerable components should be retired or upgraded through normal risk channels.

Technical view

The CVE identifies a stack buffer overflow in /ddsi/q_bitset.h in Eclipse IoT Cyclone DDS Project v0.1.0. The documented impact is subscriber server crash. The source bundle lacks exploitability details, CVSS metrics, CWE mapping, and precise vendor/product metadata beyond the description.

Likely exposure

Exposure is most likely in systems embedding or deploying Eclipse Cyclone DDS v0.1.0, especially DDS subscriber services. The CVE record’s affected vendor/product fields are not populated, so inventory confirmation is required before scoping impact.

Exploitation context

The source bundle does not report active exploitation, and the CVE is not listed as KEV. Public references include the project repository, Eclipse project page, and GitHub issue, but no source here confirms weaponized exploitation or real-world attacks.

Researcher notes

Evidence is sparse. The CVE states stack buffer overflow and crash impact only. No CVSS, CWE, CPE, fixed release, exploit status, or reproduction detail is present in the supplied source bundle. Avoid broader affected-version claims unless confirmed by vendor sources.

Mitigation direction

  • Inventory Cyclone DDS usage and flag any v0.1.0 deployments.
  • Review the referenced GitHub issue and vendor project guidance for fixed versions.
  • Prioritize supported Cyclone DDS releases if vendor guidance confirms remediation.
  • Restrict DDS subscriber exposure to trusted environments where feasible.
  • Monitor operational logs for unexplained DDS subscriber crashes.

Validation and detection

  • Check SBOMs, dependency manifests, containers, and build artifacts for Cyclone DDS v0.1.0.
  • Confirm whether deployed services run DDS subscriber functionality.
  • Map affected deployments to business services with availability requirements.
  • Review crash telemetry for patterns consistent with subscriber process termination.
  • Track the referenced project issue for remediation or affected-version clarification.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2020-18734 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.