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, when the security mode is enabled, modifying the DATA Submessage within an SPDP packet sent by a publisher causes a heap buffer overflow, resulting in remote termination of Fast-DDS. If the fields of `PID_IDENTITY_TOKEN` or `PID_PERMISSIONS_TOKEN` in the DATA Submessage are tampered with — specially `readOctetVector` reads an unchecked `vecsize` that is propagated unchanged into `readData` as the `length` parameter — the attacker-contro lled `vecsize` can trigger a 32-bit integer overflow during the `length` calculation. That overflow can cause large alloca tion attempt that quickly leads to OOM, enabling a remotely-triggerable denial-of-service and remote process termination. 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-2025-62602
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:31 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, when the security mode is enabled, modifying the DATA Submessage within an SPDP packet sent by a publisher causes a heap buffer overflow, resulting in remote termination of Fast-DDS. If the fields of `PID_IDENTITY_TOKEN` or `PID_PERMISSIONS_TOKEN` in the DATA Submessage are tampered with — specially `readOctetVector` reads an unchecked `vecsize` that is propagated unchanged into `readData` as the `length` parameter — the attacker-contro lled `vecsize` can trigger a 32-bit integer overflow during the `length` calculation. That overflow can cause large alloca tion attempt that quickly leads to OOM, enabling a remotely-triggerable denial-of-service and remote process termination. Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
osv:UBUNTU-CVE-2025-62602
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": "283d5ac373b56cab563a400ce0bd021e59ed6e80f9d1b500b835acc4e8046227",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-62602",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-62602",
"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, when the security mode is enabled, modifying the DATA Submessage within an SPDP packet sent by a publisher causes a heap buffer overflow, resulting in remote termination of Fast-DDS. If the fields of `PID_IDENTITY_TOKEN` or `PID_PERMISSIONS_TOKEN` in the DATA Submessage are tampered with — specially `readOctetVector` reads an unchecked `vecsize` that is propagated unchanged into `readData` as the `length` parameter — the attacker-contro lled `vecsize` can trigger a 32-bit integer overflow during the `length` calculation. That overflow can cause large alloca tion attempt that quickly leads to OOM, enabling a remotely-triggerable denial-of-service and remote process termination. Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.",
"evidence": "osv:UBUNTU-CVE-2025-62602",
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}
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{
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],
"severity": "high",
"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/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:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
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],
"modified": "2026-10-17T12:58:38.238043069Z",
"provider": "osv",
"upstream": [
"CVE-2025-62602"
],
"references": [
"https://ubuntu.com/security/CVE-2025-62602",
"https://www.cve.org/CVERecord?id=CVE-2025-62602",
"https://github.com/eProsima/Fast-DDS/commit/354218514d32beac963ff5c306f1cf159ee37c5f"
]
},
"related_cves": [
{
"value": "CVE-2025-62602",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358915,
"published_at": "2026-02-03T20:15:00+00:00"
}