Critical
fastdds — security advisory
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a heap buffer overflow exists in the Fast-DDS DATA_FRAG receive path. An un authenticated sender can transmit a single malformed RTPS DATA_FRAG packet where `fragmentSize` and `sampleSize` are craft ed to violate internal assumptions. Due to a 4-byte alignment step during fragment metadata initialization, the code write s past the end of the allocated payload buffer, causing immediate crash (DoS) and potentially enabling memory corruption ( RCE risk). Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
- Products
- fastdds
- Affected versions
- 2.1.0+ds-9, 2.10.1+ds-3, 2.11.2+ds-6, 2.11.2+ds-6.1build2, 2.11.2+ds-6.1build3, 2.11.2+ds-6ubuntu1, 2.4.1+ds-1, 2.5.0+ds-3, 2.5.0+ds-3ubuntu0.1~esm1, 3.1.2+ds-1, 3.1.2+ds-1build1, 3.3.0+ds-3ubuntu1, 3.3.0+ds-3ubuntu3
- Fixed versions
- Not specified
- CVEs
- CVE-2025-62799
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:48 UTC · Revision 1
Source evidence
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a heap buffer overflow exists in the Fast-DDS DATA_FRAG receive path. An un authenticated sender can transmit a single malformed RTPS DATA_FRAG packet where `fragmentSize` and `sampleSize` are craft ed to violate internal assumptions. Due to a 4-byte alignment step during fragment metadata initialization, the code write s past the end of the allocated payload buffer, causing immediate crash (DoS) and potentially enabling memory corruption ( RCE risk). Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
osv:UBUNTU-CVE-2025-62799
fastdds
Fixed versions: Not specified
fastdds
Fixed versions: Not specified
fastdds
Fixed versions: Not specified
fastdds
Fixed versions: Not specified
fastdds
Fixed versions: Not specified
Complete source record
{
"id": "3224435b5ff761366256387140bbbea0e130e25e66179a34bc8dfe8b8b4237e4",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-62799",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-62799",
"summary": "Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a heap buffer overflow exists in the Fast-DDS DATA_FRAG receive path. An un authenticated sender can transmit a single malformed RTPS DATA_FRAG packet where `fragmentSize` and `sampleSize` are craft ed to violate internal assumptions. Due to a 4-byte alignment step during fragment metadata initialization, the code write s past the end of the allocated payload buffer, causing immediate crash (DoS) and potentially enabling memory corruption ( RCE risk). Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.",
"evidence": "osv:UBUNTU-CVE-2025-62799",
"products": [
{
"name": {
"value": "fastdds",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.1.0+ds-9",
"evidence": "/affected/0/versions"
},
{
"value": "2.4.1+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.0+ds-3",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.0+ds-3ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "fastdds",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "2.10.1+ds-3",
"evidence": "/affected/1/versions"
},
{
"value": "2.11.2+ds-6",
"evidence": "/affected/1/versions"
},
{
"value": "2.11.2+ds-6ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "2.11.2+ds-6.1build2",
"evidence": "/affected/1/versions"
},
{
"value": "2.11.2+ds-6.1build3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.1.2+ds-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.1.2+ds-1build1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "fastdds",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.3.0+ds-3ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.0+ds-3ubuntu3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "fastdds",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.1.2+ds-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "3.3.0+ds-3ubuntu1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2025-62799",
"aliases": [
"UBUNTU-CVE-2025-62799"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "fastdds",
"purl": "pkg:deb/ubuntu/fastdds?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"2.1.0+ds-9",
"2.4.1+ds-1",
"2.5.0+ds-3",
"2.5.0+ds-3ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fastdds-tools",
"binary_version": "2.5.0+ds-3ubuntu0.1~esm1"
},
{
"binary_name": "libfastrtps2.5",
"binary_version": "2.5.0+ds-3ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
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}
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],
"package": {
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"purl": "pkg:deb/ubuntu/fastdds?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"2.10.1+ds-3",
"2.11.2+ds-6",
"2.11.2+ds-6ubuntu1",
"2.11.2+ds-6.1build2",
"2.11.2+ds-6.1build3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fastdds-tools",
"binary_version": "2.11.2+ds-6.1build3"
},
{
"binary_name": "libfastrtps2.11t64",
"binary_version": "2.11.2+ds-6.1build3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "fastdds",
"purl": "pkg:deb/ubuntu/fastdds?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.1.2+ds-1",
"3.1.2+ds-1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fastdds-tools",
"binary_version": "3.1.2+ds-1build1"
},
{
"binary_name": "libfastdds3.1",
"binary_version": "3.1.2+ds-1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
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],
"package": {
"name": "fastdds",
"purl": "pkg:deb/ubuntu/fastdds?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.3.0+ds-3ubuntu1",
"3.3.0+ds-3ubuntu3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fastdds-tools",
"binary_version": "3.3.0+ds-3ubuntu3"
},
{
"binary_name": "libfastdds3.3",
"binary_version": "3.3.0+ds-3ubuntu3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "fastdds",
"purl": "pkg:deb/ubuntu/fastdds?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"3.1.2+ds-1build1",
"3.3.0+ds-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62799.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "fastdds-tools",
"binary_version": "3.3.0+ds-3ubuntu1"
},
{
"binary_name": "libfastdds3.3",
"binary_version": "3.3.0+ds-3ubuntu1"
}
]
}
}
],
"modified": "2026-10-17T12:57:28.608521327Z",
"provider": "osv",
"upstream": [
"CVE-2025-62799"
],
"references": [
"https://ubuntu.com/security/CVE-2025-62799",
"https://www.cve.org/CVERecord?id=CVE-2025-62799",
"https://github.com/eProsima/Fast-DDS/commit/d6dd58f4ecd28cd1c3bc4ef0467be9110fa94659"
]
},
"related_cves": [
{
"value": "CVE-2025-62799",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 357562,
"published_at": "2026-02-03T20:15:00+00:00"
}