{"id":"CVE-2021-38487","state":"PUBLISHED","title":"Potential Network Amplification and Information Exposure in RTI Connext Professional and Connext Micro","description":"RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure.","publishedAt":"2022-05-05T15:18:41.000Z","updatedAt":"2025-06-23T12:13:04.553Z","severity":{"score":8.8,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","source":"RTI"},"assigner":"icscert","products":["RTI Connext Professional","RTI Connext Micro"],"affected":[{"vendor":"RTI","product":"Connext Professional","defaultStatus":"unaffected","versions":[{"version":"4.1","status":"affected","lessThan":"6.1.0","versionType":"custom"}]},{"vendor":"RTI","product":"Connext Micro","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.*","versionType":"custom"},{"version":"3.0.0","status":"affected","lessThan":"3.0.*","versionType":"custom"},{"version":"2.4.0","status":"affected","lessThan":"2.4.*","versionType":"custom"}]}],"references":["https://www.rti.com/vulnerabilities/#cve-2021-38487","https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F"],"weaknesses":["CWE-406","CWE-923"],"ingestedAt":"2026-10-29T19:48:49.871Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/38xxx/CVE-2021-38487.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-38487","state":"PUBLISHED","datePublished":"2022-05-05T15:18:41.000Z","dateUpdated":"2025-06-23T12:13:04.553Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2021-08-10T00:00:00.000Z"},"containers":{"cna":{"title":"Potential Network Amplification and Information Exposure in RTI Connext Professional and Connext Micro","descriptions":[{"lang":"en","value":"RTI Connext Professional versions 4.1 to 6.1.0, and Connext Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure."}],"affected":[{"vendor":"RTI","product":"Connext Professional","defaultStatus":"unaffected","versions":[{"version":"4.1","status":"affected","lessThan":"6.1.0","versionType":"custom"}]},{"vendor":"RTI","product":"Connext Micro","defaultStatus":"unaffected","versions":[{"version":"4.0.0","status":"affected","lessThan":"4.0.*","versionType":"custom"},{"version":"3.0.0","status":"affected","lessThan":"3.0.*","versionType":"custom"},{"version":"2.4.0","status":"affected","lessThan":"2.4.*","versionType":"custom"}]}],"references":[{"url":"https://www.rti.com/vulnerabilities/#cve-2021-38487"},{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"},{"url":"https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"Security Extensions Enabled"}],"cvssV4_0":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","baseSeverity":"HIGH","baseScore":8.8,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"Security Extensions Enabled"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.2,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-406","description":"CWE-406 Insufficient Control of Network Message Volume (Network Amplification)","lang":"en","type":"CWE"},{"cweId":"CWE-923","description":"CWE-923: Improper Restriction of Communication Channel to Intended Endpoints","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"RTI","orgId":"3f572a00-62e2-4423-959a-7ea25eff1638","dateUpdated":"2025-06-23T12:13:04.553Z"},"credits":[{"lang":"en","value":"Federico Maggi (Trend Micro Research), Ta-Lun Yen, and Chizuru Toyama (TXOne Networks, Trend Micro) reported these vulnerabilities to CISA. In addition, Patrick Kuo, Mars Cheng (TXOne Networks, Trend Micro), VÃ­ctor Mayoral-Vilches (Alias Robotics), and Erik Boasson (ADLINK Technology) also contributed to this research."}],"impacts":[{"capecId":"CAPEC-224","descriptions":[{"lang":"en","value":"CAPEC-224: Fingerprinting"}]},{"capecId":"CAPEC-490","descriptions":[{"lang":"en","value":"CAPEC-490: Amplification"}]}],"solutions":[{"lang":"en","value":"RTI recommends users apply the available patches for these issues. A patch is available on the RTI customer portal or by contacting RTI Support. Also, contact RTI Support for mitigations, including how to use RTI DDS Secure to mitigate against the network amplification issue."}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"ics-cert@hq.dhs.gov","ID":"CVE-2021-38487","STATE":"PUBLIC","TITLE":"RTI Connext DDS Professional and Connext DDS Secure Network Amplification"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Connext DDS Professional","version":{"version_data":[{"version_affected":"<=","version_name":"4.2x","version_value":"6.1.0"}]}},{"product_name":"Connext DDS Secure","version":{"version_data":[{"version_affected":"<=","version_name":"4.2x","version_value":"6.1.0"}]}},{"product_name":"Connext DDS Micro","version":{"version_data":[{"version_affected":">=","version_value":"2.4"}]}}]},"vendor_name":"RTI"}]}},"credit":[{"lang":"eng","value":"Federico Maggi (Trend Micro Research), Ta-Lun Yen, and Chizuru Toyama (TXOne Networks, Trend Micro) reported these vulnerabilities to CISA. In addition, Patrick Kuo, Mars Cheng (TXOne Networks, Trend Micro), VÃ­ctor Mayoral-Vilches (Alias Robotics), and Erik Boasson (ADLINK Technology) also contributed to this research."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"RTI Connext DDS Professional, Connext DDS Secure versions 4.2x to 6.1.0, and Connext DDS Micro versions 2.4 and later are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-406 Insufficient Control of Network Message Volume (Network Amplification)"}]}]},"references":{"reference_data":[{"name":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","refsource":"CONFIRM","url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02"},{"name":"https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F","refsource":"CONFIRM","url":"https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F"}]},"solution":[{"lang":"en","value":"RTI recommends users apply the available patches for these issues. A patch is available on the RTI customer portal or by contacting RTI Support. Also, contact RTI Support for mitigations, including how to use RTI DDS Secure to mitigate against the network amplification issue."}],"source":{"discovery":"EXTERNAL"}},"cpeApplicability":[{"nodes":[{"operator":"OR","negated":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1","versionEndExcluding":"6.1.0"}]}]},{"nodes":[{"operator":"OR","negated":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:rti:connext_micro:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0.0","versionEndExcluding":"4.0.*"},{"vulnerable":true,"criteria":"cpe:2.3:a:rti:connext_micro:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"3.0.*"},{"vulnerable":true,"criteria":"cpe:2.3:a:rti:connext_micro:*:*:*:*:*:*:*:*","versionStartIncluding":"2.4.0","versionEndExcluding":"2.4.*"}]}]}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://support.rti.com/s/login/?ec=302&startURL=%2Fs%2F","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T01:44:22.948Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-16T15:56:44.356177Z","id":"CVE-2021-38487","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-16T16:23:33.579Z"}}]}}}