{"api_version":"1","generated_at":"2026-09-11T18:14:07+00:00","cve":"CVE-2026-22590","urls":{"html":"https://cve.report/CVE-2026-22590","api":"https://cve.report/api/cve/CVE-2026-22590.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-22590","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-22590"},"summary":{"title":"Fast-DDS Discovery Server: Out-of-Bounds Read & Heap Memory Disclosure via DATA_FRAG  sampleSize / fragmentsInSubmessage","description":"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 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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-09-09 16:17:02","updated_at":"2026-09-09 20:16:54"},"problem_types":["CWE-125","CWE-131","CWE-125 CWE-125: Out-of-bounds Read","CWE-131 CWE-131: Incorrect Calculation of Buffer Size"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"9.1","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.1","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-7r7h-hwfj-q626","name":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-7r7h-hwfj-q626","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-22590","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22590","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"eProsima","product":"Fast-DDS","version":"affected < 2.6.12","platforms":[]},{"source":"CNA","vendor":"eProsima","product":"Fast-DDS","version":"affected >= 2.7.0, < 2.14.6","platforms":[]},{"source":"CNA","vendor":"eProsima","product":"Fast-DDS","version":"affected >= 3.0.0, < 3.2.4","platforms":[]},{"source":"CNA","vendor":"eProsima","product":"Fast-DDS","version":"affected >= 3.3.0, < 3.3.1","platforms":[]},{"source":"CNA","vendor":"eProsima","product":"Fast-DDS","version":"affected >= 3.4.0, < 3.4.2","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"22590","cve":"CVE-2026-22590","epss":"0.003830000","percentile":"0.316520000","score_date":"2026-09-10","updated_at":"2026-09-11 00:05:18"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-22590","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-09T16:08:33.638883Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-09T16:08:57.108Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-7r7h-hwfj-q626"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"Fast-DDS","vendor":"eProsima","versions":[{"status":"affected","version":"< 2.6.12"},{"status":"affected","version":">= 2.7.0, < 2.14.6"},{"status":"affected","version":">= 3.0.0, < 3.2.4"},{"status":"affected","version":">= 3.3.0, < 3.3.1"},{"status":"affected","version":">= 3.4.0, < 3.4.2"}]}],"descriptions":[{"lang":"en","value":"eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). 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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.","Type":"Description","Title":"Fast-DDS Discovery Server: Out-of-Bounds Read & Heap Memory Disc"}]}}}