{"id":"CVE-2023-4041","aliases":["EUVD-2023-53933","GHSA-hvfc-3xxp-p6hw"],"status":"published","title":"Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects \"Standalone\" and \"Application\" versions of Gecko Bootloader.","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":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00398,"percentile":0.34327,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-494","CWE-787","CWE-913"],"published":"2023-08-23T04:09:12Z","modified":"2026-10-28T10:38:57Z","products":[{"vendor":"silabs","product":"gecko_bootloader"},{"vendor":"silabs.com","product":"gecko bootloader"},{"vendor":"silicon labs","product":"gecko bootloader"}],"references":[{"url":"https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000XT8GsQAL?operationContext=S1","tags":["x_transferred","Permissions Required","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4041","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hvfc-3xxp-p6hw"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4041.json","tags":["advisory"]},{"url":"https://github.com/SiliconLabs/gecko_sdk/releases","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-4041","title":"Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects \"Standalone\" and \"Application\" versions of Gecko Bootloader.","status":"published","published":"2023-08-23T04:09:12.18Z","modified":"2024-10-03T14:08:22.261Z","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":"cna"}],"cwes":["CWE-120","CWE-787","CWE-913"],"updated_at":"2026-11-02T14:35:30.851125Z"}],"euvd":[{"id":"EUVD-2023-53933","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects \"Standalone\" and \"Application\" versions of Gecko Bootloader.","status":"published","published":"2023-08-23T04:09:12Z","modified":"2024-10-03T14:08:22Z","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"}],"updated_at":"2026-11-03T00:27:54.651509Z"}],"ghsa":[{"id":"GHSA-hvfc-3xxp-p6hw","title":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write,...","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects \"Standalone\" and \"Application\" versions of Gecko Bootloader.\n\n","status":"published","published":"2023-08-23T06:30:17Z","modified":"2024-04-04T07:09:38Z","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-120"],"updated_at":"2026-11-02T14:56:48.742308Z"}],"nvd":[{"id":"CVE-2023-4041","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects \"Standalone\" and \"Application\" versions of Gecko Bootloader.","status":"published","published":"2023-08-23T05:15:47.99Z","modified":"2026-06-17T06:36:58.37Z","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":"secondary"},{"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-120","CWE-787","CWE-913","CWE-494"],"updated_at":"2026-11-02T14:08:25.025396Z"}],"osv":[{"id":"CVE-2023-4041","title":"Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects \"Standalone\" and \"Application\" versions of Gecko Bootloader.","status":"published","published":"2023-08-23T04:09:12.18Z","modified":"2026-10-28T10:38:57.828671059Z","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-120","CWE-787","CWE-913"],"updated_at":"2026-11-02T15:44:33.244128Z"}]}}