{"id":"CVE-2022-31223","aliases":["EUVD-2022-52807","GHSA-2qf2-mq6q-w69h"],"status":"published","title":"Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. A local...","description":"Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. A local authenticated administrator user could potentially exploit this vulnerability by sending unexpected null bytes in order to read memory on the system.","severity":{"version":"3.1","score":2.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00182,"percentile":0.07877,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-158"],"published":"2022-09-12T18:35:20Z","modified":"2026-06-17T04:45:10Z","products":[{"vendor":"dell","product":"chengming_3900_firmware"},{"vendor":"dell","product":"cpg bios"},{"vendor":"dell","product":"inspiron_14_plus_7420_firmware"},{"vendor":"dell","product":"inspiron_16_plus_7620_firmware"},{"vendor":"dell","product":"inspiron_3910_firmware"},{"vendor":"dell","product":"inspiron_5320_firmware"},{"vendor":"dell","product":"inspiron_5420_firmware"},{"vendor":"dell","product":"inspiron_5620_firmware"},{"vendor":"dell","product":"inspiron_7420_firmware"},{"vendor":"dell","product":"inspiron_7620_firmware"},{"vendor":"dell","product":"optiplex_3000_firmware"},{"vendor":"dell","product":"optiplex_3000_thin_client_firmware"},{"vendor":"dell","product":"optiplex_5000_firmware"},{"vendor":"dell","product":"optiplex_5400_firmware"},{"vendor":"dell","product":"optiplex_7000_firmware"},{"vendor":"dell","product":"optiplex_7000_oem_firmware"},{"vendor":"dell","product":"optiplex_7400_firmware"},{"vendor":"dell","product":"precision_3460_small_form_factor_firmware"},{"vendor":"dell","product":"precision_3660_tower_firmware"},{"vendor":"dell","product":"precision_5770_firmware"},{"vendor":"dell","product":"vostro_3710_firmware"},{"vendor":"dell","product":"vostro_3910_firmware"},{"vendor":"dell","product":"vostro_5320_firmware"},{"vendor":"dell","product":"vostro_5620_firmware"},{"vendor":"dell","product":"vostro_7620_firmware"},{"vendor":"dell","product":"xps_17_9720_firmware"}],"references":[{"url":"https://www.dell.com/support/kbdoc/000202196","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31223"},{"url":"https://github.com/advisories/GHSA-2qf2-mq6q-w69h"}],"sources":{"cve":[{"id":"CVE-2022-31223","description":"Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. 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A local authenticated administrator user could potentially exploit this vulnerability by sending unexpected null bytes in order to read memory on the system.","status":"published","published":"2022-09-13T00:00:34Z","modified":"2023-02-02T05:08:15Z","cvss":[{"version":"3.1","score":2.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T14:52:42.475291Z"}],"nvd":[{"id":"CVE-2022-31223","description":"Dell BIOS versions contain an Improper Neutralization of Null Byte vulnerability. A local authenticated administrator user could potentially exploit this vulnerability by sending unexpected null bytes in order to read memory on the system.","status":"published","published":"2022-09-12T19:15:09.177Z","modified":"2026-06-17T04:45:10.027Z","cvss":[{"version":"3.1","score":2.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":2.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-158"],"updated_at":"2026-11-02T14:07:27.631109Z"}]}}