HOMEVULNERABILITIESCVE-2023-39945
HIGH

CVE-2023-39945

CWE-248Published: August 11, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-39945 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
eprosima1 product(s)
fast dds
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pcap
ADVISORYhttps://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79
ADVISORYhttps://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9
ADVISORYhttps://www.debian.org/security/2023/dsa-5481
ADVISORYhttps://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pcap
ADVISORYhttps://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79
ADVISORYhttps://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9
ADVISORYhttps://www.debian.org/security/2023/dsa-5481

All References (8)

→
https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pcapThird Party Advisory
→
https://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79Third Party Advisory
→
https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5481Third Party Advisory
→
https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pcapThird Party Advisory
→
https://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79Third Party Advisory
→
https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5481Third Party Advisory

Quick Facts

CVE IDCVE-2023-39945
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-248
CISA KEVNo
Affected2 vendor(s)
PublishedAug 11, 2023

Related CVEs (CWE-248)

CVE-2018-11466
9.8
CVE-2025-53620
9.2
CVE-2025-67647
9.1
CVE-2023-0790
8.8
CVE-2025-53366
8.7
CVE-2025-53365
8.7

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-39945 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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