{"id":"CVE-2021-34122","aliases":["EUVD-2021-20785","GHSA-7g9v-9m8f-c5p8"],"status":"published","title":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","description":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00816,"percentile":0.57536,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2022-03-10T14:50:33Z","modified":"2026-10-20T10:54:44Z","products":[{"vendor":"rockcarry","product":"ffjpeg"}],"references":[{"url":"https://github.com/rockcarry/ffjpeg/issues/36","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/rockcarry/ffjpeg/pull/37","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34122"},{"url":"https://github.com/advisories/GHSA-7g9v-9m8f-c5p8"}],"sources":{"cve":[{"id":"CVE-2021-34122","description":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","status":"published","published":"2022-03-10T14:50:33Z","modified":"2024-08-04T00:05:52.294Z","updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-20785","description":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","status":"published","published":"2022-03-10T14:50:33Z","modified":"2024-08-04T00:05:52Z","updated_at":"2026-11-03T03:24:32.880562Z"}],"ghsa":[{"id":"GHSA-7g9v-9m8f-c5p8","title":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","description":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","status":"published","published":"2022-03-11T00:02:31Z","modified":"2023-01-27T05:00:39Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:41:43.766328Z"}],"nvd":[{"id":"CVE-2021-34122","description":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","status":"published","published":"2022-03-10T17:42:36.623Z","modified":"2026-06-17T03:55:29.71Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:05.198719Z"}],"osv":[{"id":"CVE-2021-34122","description":"The function bitstr_tell at bitstr.c in ffjpeg commit 4ab404e has a NULL pointer dereference.","status":"published","published":"2022-03-10T17:42:36.623Z","modified":"2026-10-20T10:54:44.993141475Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}