{"id":"CVE-2021-33505","aliases":["EUVD-2021-20204","GHSA-fj3r-qw82-xcxx"],"status":"published","title":"Falco through 0.28.1 has a Time-of-check Time-of-use (TOCTOU) Race Condition. Issue is fixed in...","description":"A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions \u003e= 0.29.1.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00349,"percentile":0.28882,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-07-15T10:26:06Z","modified":"2026-10-20T10:54:44Z","products":[{"vendor":"falco","product":"falco"}],"references":[{"url":"https://github.com/falcosecurity/falco/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"https://github.com/falcosecurity/falco/pull/1675","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33505"},{"url":"https://github.com/advisories/GHSA-fj3r-qw82-xcxx"}],"sources":{"cve":[{"id":"CVE-2021-33505","description":"A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions \u003e= 0.29.1.","status":"published","published":"2021-07-15T10:26:06Z","modified":"2024-08-03T23:50:43.015Z","updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20204","description":"A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions \u003e= 0.29.1.","status":"published","published":"2021-07-15T10:26:06Z","modified":"2024-08-03T23:50:43Z","updated_at":"2026-11-03T03:24:34.304953Z"}],"ghsa":[{"id":"GHSA-fj3r-qw82-xcxx","title":"Falco through 0.28.1 has a Time-of-check Time-of-use (TOCTOU) Race Condition. Issue is fixed in...","description":"Falco through 0.28.1 has a Time-of-check Time-of-use (TOCTOU) Race Condition. Issue is fixed in Falco versions \u003e= 0.29.1.","status":"published","published":"2022-05-24T19:08:13Z","modified":"2023-01-30T05:00:51Z","cwes":["CWE-269"],"updated_at":"2026-11-02T14:46:17.249643Z"}],"nvd":[{"id":"CVE-2021-33505","description":"A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions \u003e= 0.29.1.","status":"published","published":"2021-07-15T11:15:07.9Z","modified":"2026-06-17T03:54:41.63Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:06:55.747384Z"}],"osv":[{"id":"CVE-2021-33505","description":"A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions \u003e= 0.29.1.","status":"published","published":"2021-07-15T11:15:07.9Z","modified":"2026-10-20T10:54:44.145573981Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}