CVE-2023-39945

Name: CVE-2023-39945
Creator: NVD / NIST
Published: 2023-08-11T14:15:13.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2023-39945 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.81%

52.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-248

Affected Software

Vendor	Product	Versions
Eprosima	Fast Dds	>= 2.6.0, < 2.6.5
Eprosima	Fast Dds	>= 2.9.0, < 2.9.2
Eprosima	Fast Dds	>= 2.10.0, < 2.10.2
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0

References

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

Timeline

Published: Aug 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39945?

How severe is CVE-2023-39945?

CVE-2023-39945 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39945?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39945?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST