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CVE-2025-64438— Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS

Quick assessment

Affected
eProsima Fast-DDS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

eProsima Fast DDS是eProsima公司的OMG（对象管理组）DDS（数据分发服务）标准的 C++ 实现。 eProsima Fast DDS 3.4.1之前版本、3.3.1之前版本和2.6.11之前版本存在安全漏洞，该漏洞源于处理RTPS GAP子消息时存在无限循环，可能导致内存耗尽和进程终止。

AI Predicted 7.5 Difficulty: Easy EPSS 0.54% · P43
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I. Basic Information for CVE-2025-64438

Vulnerability Information
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Vulnerability Title
Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
eProsima Fast DDS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eProsima Fast DDS是eProsima公司的OMG（对象管理组）DDS（数据分发服务）标准的 C++ 实现。 eProsima Fast DDS 3.4.1之前版本、3.3.1之前版本和2.6.11之前版本存在安全漏洞，该漏洞源于处理RTPS GAP子消息时存在无限循环，可能导致内存耗尽和进程终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
eProsima Fast-DDS 3.4.0 ~ 3.4.1 -

II. Public POCs for CVE-2025-64438

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III. Intelligence Information for CVE-2025-64438

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Patches & Fixes for CVE-2025-64438 (1)

Same Patch Batch · eProsima · 2026-02-03 · 8 CVEs total

CVE-2025-62599 8.6 HIGH eprosima Fast DDS affected by Out-of-Memory in readPropertySeq via Manipulated DATA Submes
CVE-2025-62600 8.6 HIGH eprosima Fast DDS affected by Out-of-Memory in readBinaryPropertySeq via Manipulated DATA
CVE-2025-62799 FastDDS's heap buffer overflow in RTPS DATA_FRAG enables unauthenticated DoS (potential RC
CVE-2025-62602 FastDDS has heap buffer overflow in readData via Manipulated DATA Submessage when DDS Secu
CVE-2025-62601 FastDDS has heap buffer overflow in readString via Manipulated DATA Submessage when DDS Se
CVE-2025-62603 FastDDS has Out-of-memory while parsing GenericMessage when DDS Security is enabled
CVE-2025-64098 FastDDS has Out-of-memory in readOctetVector via Manipulated DATA Submessage when DDS Secu

IV. Related Vulnerabilities

Same product: Fast-DDS
Same vendor: eProsima
Same weakness: CWE-835

V. Comments for CVE-2025-64438

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