{"id":"CVE-2021-30636","aliases":["EUVD-2021-17556","GHSA-gc9h-g4qm-fgcv"],"status":"published","title":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer...","description":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer overflow during mishandled memory allocation by pvPortCalloc and pvPortRealloc.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01475,"percentile":0.74032,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2022-01-24T00:27:41Z","modified":"2026-06-17T03:50:36Z","products":[{"vendor":"mediatek","product":"linkit_software_development_kit"}],"references":[{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory","US Government Resource","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30636"},{"url":"https://github.com/advisories/GHSA-gc9h-g4qm-fgcv"}],"sources":{"cve":[{"id":"CVE-2021-30636","description":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer overflow during mishandled memory allocation by pvPortCalloc and pvPortRealloc.","status":"published","published":"2022-01-24T00:27:41Z","modified":"2024-08-03T22:40:31.75Z","updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-17556","description":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer overflow during mishandled memory allocation by pvPortCalloc and pvPortRealloc.","status":"published","published":"2022-01-24T00:27:41Z","modified":"2024-08-03T22:40:31Z","updated_at":"2026-11-03T03:24:41.467382Z"}],"ghsa":[{"id":"GHSA-gc9h-g4qm-fgcv","title":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer...","description":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer overflow during mishandled memory allocation by pvPortCalloc and pvPortRealloc.","status":"published","published":"2022-01-25T00:02:03Z","modified":"2024-03-07T05:10:53Z","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":"2026-11-02T14:55:38.886845Z"}],"nvd":[{"id":"CVE-2021-30636","description":"In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer overflow during mishandled memory allocation by pvPortCalloc and pvPortRealloc.","status":"published","published":"2022-01-24T01:15:07.87Z","modified":"2026-06-17T03:50:36.293Z","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","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":"2026-11-02T14:07:03.821385Z"}]}}