{"id":"CVE-2021-38487","aliases":["EUVD-2021-24939","GHSA-vhvr-hgg7-6xqj"],"status":"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.","severity":{"version":"4.0","score":8.8,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.03383,"percentile":0.88892,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-406","CWE-923"],"published":"2022-05-05T15:18:41Z","modified":"2026-06-17T04:02:12Z","products":[{"vendor":"rti","product":"connext dds micro"},{"vendor":"rti","product":"connext dds professional"},{"vendor":"rti","product":"connext dds secure"},{"vendor":"rti","product":"connext micro"},{"vendor":"rti","product":"connext professional"},{"vendor":"rti","product":"connext_dds_micro"},{"vendor":"rti","product":"connext_professional"},{"vendor":"rti","product":"connext_secure"}],"references":[{"url":"https://www.rti.com/vulnerabilities/#cve-2021-38487"},{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://support.rti.com/s/login/?ec=302\u0026startURL=%2Fs%2F","tags":["x_refsource_CONFIRM","x_transferred","Permissions Required","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38487"},{"url":"https://github.com/advisories/GHSA-vhvr-hgg7-6xqj"}],"sources":{"cve":[{"id":"CVE-2021-38487","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.","status":"published","published":"2022-05-05T15:18:41Z","modified":"2025-06-23T12:13:04.553Z","cvss":[{"version":"4.0","score":8.8,"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","level":"high","assessor":"cna"},{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-406","CWE-923"],"updated_at":"2026-11-02T14:33:07.349244Z"}],"euvd":[{"id":"EUVD-2021-24939","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.","status":"published","published":"2022-05-05T15:18:41Z","modified":"2025-06-23T12:13:04Z","cvss":[{"version":"4.0","score":8.8,"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","level":"high"}],"updated_at":"2026-11-02T20:32:18.218874Z"}],"ghsa":[{"id":"GHSA-vhvr-hgg7-6xqj","title":"RTI Connext DDS Professional, Connext DDS Secure versions 4.2x to 6.1.0, and Connext DDS Micro...","description":"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.","status":"published","published":"2022-05-06T00:00:43Z","modified":"2023-02-01T05:02:06Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-406"],"updated_at":"2026-11-02T14:49:50.516173Z"}],"nvd":[{"id":"CVE-2021-38487","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.","status":"published","published":"2022-05-05T17:15:09.857Z","modified":"2026-06-17T04:02:12.597Z","cvss":[{"version":"4.0","score":8.8,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-406","CWE-923"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}