CVE-2025-64438
7.5 · HIGHOverview
CVE-2025-64438 is a high-severity vulnerability affecting eprosima fast_dds. It was published on February 3, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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 remotely triggerable Out-of-Memory (OOM) denial-of-service exists in Fast
-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList
.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s
equence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination.
No authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS
limit (non-ASan / unlimited), memory consumption was observed to rise to ~64 GB. Versions 3.4.1, 3.3.1, and 2.6.11 patch t
he issue.
Remediation
Check the references section for vendor advisories and patches from eprosima. Update fast_dds to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| eprosima | fast_dds | >= 0, < 2.6.11 | Affected |
References
Frequently Asked Questions
What is CVE-2025-64438?
CVE-2025-64438 is a high-severity vulnerability affecting eprosima fast_dds. It was published on February 3, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2025-64438?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-64438?
Check the references section for vendor advisories and patches from eprosima. Update fast_dds to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-64438?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-64438 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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