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CVE-2025-62603— FastDDS has Out-of-memory while parsing GenericMessage when DDS Security is enabled

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之前版本存在缓冲区错误漏洞，该漏洞源于解析ParticipantGenericMessage消息时未进行最小化解析，可能引发内存耗尽和远程进程终止。

AI Predicted 7.5 Difficulty: Easy EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-62603

Vulnerability Information
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Vulnerability Title
FastDDS has Out-of-memory while parsing GenericMessage when DDS Security is enabled
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 ). ParticipantGenericMessage is the DDS Security control-message container that carries not only the handshake but also on going security-control traffic after the handshake, such as crypto-token exchange, rekeying, re-authentication, and token delivery for newly appearing endpoints. On receive, the CDR parser is invoked first and deserializes the `message_data` (i .e., the `DataHolderSeq`) via the `readParticipantGenericMessage → readDataHolderSeq` path. The `DataHolderSeq` is parsed sequentially: a sequence count (`uint32`), and for each DataHolder the `class_id` string (e.g. `DDS:Auth:PKI-DH:1.0+Req`), string properties (a sequence of key/value pairs), and binary properties (a name plus an octet-vector). The parser operat es at a stateless level and does not know higher-layer state (for example, whether the handshake has already completed), s o it fully unfolds the structure before distinguishing legitimate from malformed traffic. Because RTPS permits duplicates, delays, and retransmissions, a receiver must perform at least minimal structural parsing to check identity and sequence n umbers before discarding or processing a message; the current implementation, however, does not "peek" only at a minimal header and instead parses the entire `DataHolderSeq`. As a result, prior to versions 3.4.1, 3.3.1, and 2.6.11, this parsi ng behavior can trigger an out-of-memory condition and remotely terminate the process. Versions 3.4.1, 3.3.1, and 2.6.11 p atch the 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
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
eProsima Fast DDS 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于解析ParticipantGenericMessage消息时未进行最小化解析，可能引发内存耗尽和远程进程终止。
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-2025-62603

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III. Intelligence Information for CVE-2025-62603

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Patches & Fixes for CVE-2025-62603 (3)

Vendor Advisories for CVE-2025-62603 (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-2025-64098 FastDDS has Out-of-memory in readOctetVector via Manipulated DATA Submessage when DDS Secu
CVE-2025-64438 Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS

IV. Related Vulnerabilities

Same product: Fast-DDS
Same vendor: eProsima
Same weakness: CWE-125

V. Comments for CVE-2025-62603

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