{"id":"CVE-2021-38427","aliases":["EUVD-2021-24879","GHSA-xpjm-7phh-w9j8"],"status":"published","title":"RTI Connext DDS Professional and Connext DDS Secure Stack-based Buffer Overflow","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.","severity":{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00581,"percentile":0.48212,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121","CWE-787"],"published":"2022-05-05T15:25:21Z","modified":"2026-06-17T04:02:04Z","products":[{"vendor":"rti","product":"connext dds professional"},{"vendor":"rti","product":"connext dds secure"},{"vendor":"rti","product":"connext_professional"},{"vendor":"rti","product":"connext_secure"}],"references":[{"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-2021-38427"},{"url":"https://github.com/advisories/GHSA-xpjm-7phh-w9j8"}],"sources":{"cve":[{"id":"CVE-2021-38427","title":"RTI Connext DDS Professional and Connext DDS Secure Stack-based Buffer Overflow","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.","status":"published","published":"2022-05-05T15:25:21Z","modified":"2025-04-16T16:23:03.124Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-24879","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.","status":"published","published":"2022-05-05T15:25:21Z","modified":"2025-04-16T16:23:03Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium"}],"updated_at":"2026-11-02T20:52:24.329168Z"}],"ghsa":[{"id":"GHSA-xpjm-7phh-w9j8","title":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a...","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.","status":"published","published":"2022-05-06T00:00:47Z","modified":"2025-02-05T15:32:16Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T14:59:47.709555Z"}],"nvd":[{"id":"CVE-2021-38427","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.","status":"published","published":"2022-05-05T17:15:09.147Z","modified":"2026-06-17T04:02:04.69Z","cvss":[{"version":"3.1","score":6.6,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}