{"id":"CVE-2021-34123","aliases":["EUVD-2021-20786","GHSA-vvwm-9cq7-j8mv"],"status":"published","title":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function...","description":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.","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":"2026-11-12","score":0.00739,"percentile":0.55078,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2023-07-18T00:00:00Z","modified":"2026-06-17T03:55:29Z","products":[{"vendor":"atasm_project","product":"atasm"}],"references":[{"url":"https://sourceforge.net/p/atasm/bugs/23/","tags":["x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34123"},{"url":"https://sourceforge.net/p/atasm/bugs/23"},{"url":"https://github.com/advisories/GHSA-vvwm-9cq7-j8mv"}],"sources":{"cve":[{"id":"CVE-2021-34123","description":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.","status":"published","published":"2023-07-18T00:00:00Z","modified":"2024-10-28T17:00:12.947Z","updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-20786","description":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.","status":"published","published":"2023-07-18T00:00:00Z","modified":"2024-10-28T17:00:12Z","updated_at":"2026-11-03T00:05:16.135425Z"}],"ghsa":[{"id":"GHSA-vvwm-9cq7-j8mv","title":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function...","description":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.","status":"published","published":"2023-07-18T15:30:36Z","modified":"2024-04-04T06:13:27Z","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-787"],"updated_at":"2026-11-02T14:56:40.370348Z"}],"nvd":[{"id":"CVE-2021-34123","description":"An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.","status":"published","published":"2023-07-18T14:15:11.837Z","modified":"2026-06-17T03:55:29.823Z","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"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:07.764332Z"}]}}