{"id":"CVE-2020-21834","title":"A null pointer deference issue exists in GNU LibreDWG 0.10 via get_bmp ../../programs/dwgbmp.c:164.","summary":"A null pointer deference issue exists in GNU LibreDWG 0.10 via get_bmp ../../programs/dwgbmp.c:164.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"gnu","product":"libredwg","affected":["libredwg = 0.10"],"published":"2021-05-17","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-21834","references":[{"url":"https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574492468","label":"cve@mitre.org"},{"url":"http://gnu.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/LibreDWG/libredwg/issues/188#issuecomment-574492468","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00863,"epssPercentile":0.56854,"ingestedAt":"2026-07-05T00:59:26.404Z","slug":"CVE-2020-21834","body":"## Overview\n\nA null pointer deference issue exists in GNU LibreDWG 0.10 via get_bmp ../../programs/dwgbmp.c:164.\n\n## Affected\n\n- `libredwg = 0.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}