{"id":"CVE-2026-22590","title":"eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group)","summary":"eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Versions prior to 2.6.12, 2.14.6, 3.2.4, 3.3.1, and 3.4.2 have a remotely triggerable Out-of-Bounds Read whil…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-125","CWE-131"],"vendor":"eProsima","product":"Fast-DDS","affected":["Fast-DDS < 2.6.12","Fast-DDS >= 2.7.0, < 2.14.6","Fast-DDS >= 3.0.0, < 3.2.4","Fast-DDS >= 3.3.0, < 3.3.1","Fast-DDS >= 3.4.0, < 3.4.2"],"published":"2026-09-09","updated":"2026-09-09","sourceUpdated":"2026-09-09T20:16:54.383","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-22590","references":[{"url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-7r7h-hwfj-q626","label":"security-advisories@github.com"},{"url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-7r7h-hwfj-q626","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-09T16:08:33.638883Z"},"ingestedAt":"2026-09-09T16:14:05.562Z","epss":0.00383,"epssPercentile":0.32084,"slug":"CVE-2026-22590","body":"## Overview\n\neprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Versions prior to 2.6.12, 2.14.6, 3.2.4, 3.3.1, and 3.4.2 have a remotely triggerable Out-of-Bounds Read while processing RTPS `DATA_FRAG` submessages. An attacker can craft a `DATA_FRAG` with a large `sampleSize` but a small actual payload, and set `fragmentsInSubmessage` such that the receiver treats the packet as the LAST fragment**. In this LAST-fragment path, Fast-DDS computes `incoming_length` based on `sampleSize` and calls `memcpy()` without validating `incoming_data.length >= incoming_length`. As a result, `CacheChange_t::add_fragments()` reads past the received UDP datagram buffer and into adjacent heap memory, copying those bytes into the reassembly buffer. In a Discovery Server deployment, the resulting `CacheChange_t` can be relayed to other participants, meaning that a newly joining participant may receive leaked heap memory (e.g., pointer values that could aid ASLR bypass). Versions 2.6.12, 2.14.6, 3.2.4, 3.3.1, and 3.4.2 fix the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":62,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":20933,"id":"CVE-2026-22590","ts":1788974199709,"field":"exploit_available","old":"false","new":"true"}]}