{"id":"CVE-2021-38435","aliases":["EUVD-2021-24887","GHSA-wvww-www9-c7jj"],"status":"published","title":"RTI Connext DDS Professional and Connext DDS Secure Incorrect Calculation of Buffer Size","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.","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":"2026-11-10","score":0.01445,"percentile":0.73505,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-131"],"published":"2022-05-05T15:27:58Z","modified":"2026-06-17T04:02:05Z","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-2021-38435"},{"url":"https://github.com/advisories/GHSA-wvww-www9-c7jj"}],"sources":{"cve":[{"id":"CVE-2021-38435","title":"RTI Connext DDS Professional and Connext DDS Secure Incorrect Calculation of Buffer Size","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-05T15:27:58Z","modified":"2025-04-16T16:22:40.873Z","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-131"],"updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-24887","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-05T15:27:58Z","modified":"2025-04-16T16:22:40Z","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-wvww-www9-c7jj","title":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly...","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-06T00:00:46Z","modified":"2023-02-01T05:02:06Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:49:50.516173Z"}],"nvd":[{"id":"CVE-2021-38435","description":"RTI Connext DDS Professional and Connext DDS Secure Versions 4.2x to 6.1.0 not correctly calculate the size when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-05T17:15:09.377Z","modified":"2026-06-17T04:02:05.647Z","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":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-131"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}