High
cyclonedds — security advisory
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.
- Products
- cyclonedds
- Affected versions
- 0.10.3-2, 0.10.4-1, 0.10.4-1.1, 0.10.4-1.1build1, 0.10.4-1.1build2, 0.10.4-1.1build3, 0.10.5-1, 0.10.5-1build1, 0.10.5-1build2, 0.7.0-7, 0.8.1-4, 0.8.1-4build1, 0.8.1-5, 0.8.2-1, 0.8.2-4, 0.8.2-5
- Fixed versions
- Not specified
- CVEs
- CVE-2020-18734
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:56 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2020-18734
cyclonedds
Fixed versions: Not specified
cyclonedds
Fixed versions: Not specified
cyclonedds
Fixed versions: Not specified
cyclonedds
Fixed versions: Not specified
cyclonedds
Fixed versions: Not specified
Complete source record
{
"id": "d3204d13a8cc1177386b3cb5a26e68a87e6b1957c1cff3d74f3bc032017a6d8b",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-18734",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-18734",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2020-18734",
"products": [
{
"name": {
"value": "cyclonedds",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.7.0-7",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.1-4",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.1-4build1",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.1-5",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.2-4",
"evidence": "/affected/0/versions"
},
{
"value": "0.8.2-5",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.10.3-2",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.4-1.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.4-1.1build1",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.4-1.1build2",
"evidence": "/affected/1/versions"
},
{
"value": "0.10.4-1.1build3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "cyclonedds",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "0.10.5-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "cyclonedds",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.10.5-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "0.10.5-1build2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "cyclonedds",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.10.5-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.10.5-1build1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2020-18734",
"aliases": [
"UBUNTU-CVE-2020-18734"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cyclonedds",
"purl": "pkg:deb/ubuntu/cyclonedds?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.7.0-7",
"0.8.1-4",
"0.8.1-4build1",
"0.8.1-5",
"0.8.2-1",
"0.8.2-4",
"0.8.2-5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18734.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyclonedds-tools",
"binary_version": "0.8.2-5"
},
{
"binary_name": "libcycloneddsidl0",
"binary_version": "0.8.2-5"
},
{
"binary_name": "libddsc0",
"binary_version": "0.8.2-5"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cyclonedds",
"purl": "pkg:deb/ubuntu/cyclonedds?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.10.3-2",
"0.10.4-1",
"0.10.4-1.1",
"0.10.4-1.1build1",
"0.10.4-1.1build2",
"0.10.4-1.1build3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18734.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyclonedds-tools",
"binary_version": "0.10.4-1.1build3"
},
{
"binary_name": "libcycloneddsidl0t64",
"binary_version": "0.10.4-1.1build3"
},
{
"binary_name": "libddsc0t64",
"binary_version": "0.10.4-1.1build3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cyclonedds",
"purl": "pkg:deb/ubuntu/cyclonedds?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"0.10.5-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18734.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyclonedds-tools",
"binary_version": "0.10.5-1"
},
{
"binary_name": "libcycloneddsidl0t64",
"binary_version": "0.10.5-1"
},
{
"binary_name": "libddsc0t64",
"binary_version": "0.10.5-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cyclonedds",
"purl": "pkg:deb/ubuntu/cyclonedds?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"0.10.5-1build1",
"0.10.5-1build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18734.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyclonedds-tools",
"binary_version": "0.10.5-1build2"
},
{
"binary_name": "libcycloneddsidl0t64",
"binary_version": "0.10.5-1build2"
},
{
"binary_name": "libddsc0t64",
"binary_version": "0.10.5-1build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cyclonedds",
"purl": "pkg:deb/ubuntu/cyclonedds?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.10.5-1",
"0.10.5-1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-18734.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyclonedds-tools",
"binary_version": "0.10.5-1build1"
},
{
"binary_name": "libcycloneddsidl0t64",
"binary_version": "0.10.5-1build1"
},
{
"binary_name": "libddsc0t64",
"binary_version": "0.10.5-1build1"
}
]
}
}
],
"modified": "2026-10-17T12:56:18.681438286Z",
"provider": "osv",
"upstream": [
"CVE-2020-18734"
],
"references": [
"https://ubuntu.com/security/CVE-2020-18734",
"https://projects.eclipse.org/projects/iot.cyclonedds",
"https://github.com/eclipse-cyclonedds/cyclonedds",
"https://github.com/eclipse-cyclonedds/cyclonedds/issues/476",
"https://www.cve.org/CVERecord?id=CVE-2020-18734"
]
},
"related_cves": [
{
"value": "CVE-2020-18734",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355206,
"published_at": "2021-08-23T21:15:00+00:00"
}