{"id":"CVE-2020-21840","aliases":["EUVD-2020-14606","GHSA-pp62-53mh-6rf2"],"status":"published","title":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../...","description":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01073,"percentile":0.65156,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-05-17T20:58:09Z","modified":"2026-10-20T10:52:11Z","products":[{"vendor":"gnu","product":"libredwg"}],"references":[{"url":"https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574493513","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-21840"},{"url":"http://gnu.com"},{"url":"http://libredwg.com"},{"url":"https://github.com/advisories/GHSA-pp62-53mh-6rf2"}],"sources":{"cve":[{"id":"CVE-2020-21840","description":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.","status":"published","published":"2021-05-17T20:58:09Z","modified":"2026-07-09T00:10:26.369Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-14606","description":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.","status":"published","published":"2021-05-17T20:58:09Z","modified":"2026-07-09T00:10:26Z","updated_at":"2026-11-02T18:20:09.583461Z"}],"ghsa":[{"id":"GHSA-pp62-53mh-6rf2","title":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../...","description":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.","status":"published","published":"2022-05-24T19:02:32Z","modified":"2026-07-05T00:32:22Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:09:14.897479Z"}],"nvd":[{"id":"CVE-2020-21840","description":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.","status":"published","published":"2021-05-17T21:15:07.557Z","modified":"2026-07-09T00:16:56.807Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:39.25999Z"}],"osv":[{"id":"CVE-2020-21840","description":"A heap based buffer overflow vulnerability exits in GNU LibreDWG 0.10 via bit_search_sentinel ../../src/bits.c:1985.","status":"published","published":"2021-05-17T21:15:07.557Z","modified":"2026-10-20T10:52:11.98667363Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:15.534837Z"}]}}