CVE-2023-39949: Debian Linux

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.

Affected products

• Debian Debian Linux: version 11.0 only; version 12.0 only
• Eprosima Fast Dds: from 2.6.0, before 2.6.5 (fixed in 2.6.5); version 2.9.0 only

Published 2023-08-11. Last modified 2026-06-17.