{"id":"CVE-2021-38423","aliases":["EUVD-2021-24875","GHSA-j9pc-mr89-w3h7"],"status":"published","title":"GurumDDS Heap-based Incorrect Calculation of Buffer Size","description":"All versions of GurumDDS improperly calculate the size to be used 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":0.013,"percentile":0.70676,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-131"],"published":"2022-05-05T15:23:21Z","modified":"2026-06-17T04:02:04Z","products":[{"vendor":"gurum","product":"gurumdds"},{"vendor":"gurumnetworks","product":"gurumdds"}],"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://nvd.nist.gov/vuln/detail/CVE-2021-38423"},{"url":"https://github.com/advisories/GHSA-j9pc-mr89-w3h7"}],"sources":{"cve":[{"id":"CVE-2021-38423","title":"GurumDDS Heap-based Incorrect Calculation of Buffer Size","description":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-05T15:23:21Z","modified":"2025-04-16T16:23:18.566Z","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":"2026-11-02T14:33:07.349244Z"}],"euvd":[{"id":"EUVD-2021-24875","description":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-05T15:23:21Z","modified":"2025-04-16T16:23:18Z","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-j9pc-mr89-w3h7","title":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer,...","description":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-06T00:00:47Z","modified":"2023-02-01T05:02:04Z","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":"2026-11-02T14:49:50.068333Z"}],"nvd":[{"id":"CVE-2021-38423","description":"All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.","status":"published","published":"2022-05-05T17:15:08.973Z","modified":"2026-06-17T04:02:04.22Z","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"}]}}