{"id":"CVE-2021-27417","aliases":["EUVD-2021-14171","GHSA-6gcq-2grw-gh92"],"status":"published","title":"eCosCentric eCosPro RTOS Integer Overflow or Wraparound","description":"eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.006,"percentile":0.49052,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2022-05-03T20:17:54Z","modified":"2026-06-17T03:44:49Z","products":[{"vendor":"ecoscentric","product":"ecospro"},{"vendor":"ecoscentric","product":"ecospro rtos"}],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437","tags":["x_refsource_CONFIRM","x_transferred","Permissions Required","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27417"},{"url":"https://github.com/advisories/GHSA-6gcq-2grw-gh92"}],"sources":{"cve":[{"id":"CVE-2021-27417","title":"eCosCentric eCosPro RTOS Integer Overflow or Wraparound","description":"eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.","status":"published","published":"2022-05-03T20:17:54Z","modified":"2025-04-16T16:25:33.142Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-14171","description":"eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.","status":"published","published":"2022-05-03T20:17:54Z","modified":"2025-04-16T16:25:33Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-02T20:52:23.922531Z"}],"ghsa":[{"id":"GHSA-6gcq-2grw-gh92","title":"eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in...","description":"eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.","status":"published","published":"2022-05-04T00:00:18Z","modified":"2023-02-01T05:01:28Z","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-190"],"updated_at":"2026-11-02T14:49:43.819101Z"}],"nvd":[{"id":"CVE-2021-27417","description":"eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.","status":"published","published":"2022-05-03T21:15:08.18Z","modified":"2026-06-17T03:44:49.06Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/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-190"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}