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CVE-2023-39945— Malformed serialized data in a data submessage leads to unhandled exception

Quick assessment

Affected
eProsima Fast-DDS
Exploitation
Public or AI PoC available; prioritize validation
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 2.9.1版本存在安全漏洞，该漏洞源于发送到 PDP 端口的数据子消息在 fastcdr 中引发未处理BadParamException，从而导致 fastdds 崩溃。

CVSS 8.2 · High EPSS 0.94% · P60

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-39945

Vulnerability Information
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Vulnerability Title
Malformed serialized data in a data submessage leads to unhandled exception
Source: CVE Program / CVE List V5
Vulnerability Description
eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5, a data submessage sent to PDP port raises unhandled `BadParamException` in fastcdr, which in turn crashes fastdds. Versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5 contain a patch for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
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 2.9.1版本存在安全漏洞，该漏洞源于发送到 PDP 端口的数据子消息在 fastcdr 中引发未处理BadParamException，从而导致 fastdds 崩溃。
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 < 2.6.5 -

II. Public POCs for CVE-2023-39945

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 12130 chars
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2023-39945

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Vendor Advisories for CVE-2023-39945 (2)

Other References for CVE-2023-39945 (2)

Same Patch Batch · eProsima · 2023-08-11 · 6 CVEs total

CVE-2023-39947 8.2 HIGH Another heap overflow in push_back_helper
CVE-2023-39946 8.2 HIGH Heap overflow in push_back_helper due to a CDR message
CVE-2023-39949 7.5 HIGH Improper validation of sequence numbers leading to remotely reachable assertion failure
CVE-2023-39948 7.5 HIGH Uncaught fastcdr exception (Unexpected CDR type received) crashing fastdds
CVE-2023-39534 7.5 HIGH Malformed GAP submessage triggers assertion failure

IV. Related Vulnerabilities

Same product: Fast-DDS
Same vendor: eProsima
Same weakness: CWE-248

V. Comments for CVE-2023-39945

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