{"id":"CVE-2021-34259","aliases":["EUVD-2021-20920","GHSA-7g6w-vchp-xwf7"],"status":"published","title":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics...","description":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00477,"percentile":0.41535,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-07-22T19:40:34Z","modified":"2026-10-20T10:53:49Z","products":[{"vendor":"st","product":"stm32cube_middleware"}],"references":[{"url":"https://github.com/STMicroelectronics/STM32CubeH7/issues/76","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34259"},{"url":"https://github.com/advisories/GHSA-7g6w-vchp-xwf7"}],"sources":{"cve":[{"id":"CVE-2021-34259","description":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.","status":"published","published":"2021-07-22T19:40:34Z","modified":"2024-08-04T00:05:52.536Z","updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-20920","description":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.","status":"published","published":"2021-07-22T19:40:34Z","modified":"2024-08-04T00:05:52Z","updated_at":"2026-11-03T03:24:32.880562Z"}],"ghsa":[{"id":"GHSA-7g6w-vchp-xwf7","title":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics...","description":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.","status":"published","published":"2022-05-24T19:08:54Z","modified":"2023-01-30T05:00:56Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:46:18.181654Z"}],"nvd":[{"id":"CVE-2021-34259","description":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.","status":"published","published":"2021-07-22T20:15:08.15Z","modified":"2026-06-17T03:55:35.013Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","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-120"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"CVE-2021-34259","description":"A buffer overflow vulnerability in the USBH_ParseCfgDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below allows attackers to execute arbitrary code.","status":"published","published":"2021-07-22T20:15:08.15Z","modified":"2026-10-20T10:53:49.027657288Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}