{"id":"CVE-2021-23906","aliases":["EUVD-2021-10829","GHSA-jx2c-9rxg-v58w"],"status":"published","title":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz...","description":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.","severity":{"version":"3.1","score":1.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:N/I:L/PR:N/S:U/UI:R","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00804,"percentile":0.56999,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2021-05-13T18:56:32Z","modified":"2026-06-17T03:39:00Z","products":[{"vendor":"mercedes-benz","product":"mercedes-benz_user_experience"}],"references":[{"url":"https://media.daimler.com/marsMediaSite/en/instance/ko.xhtml?oid=49946866","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://keenlab.tencent.com/en/2021/05/12/Tencent-Security-Keen-Lab-Experimental-Security-Assessment-on-Mercedes-Benz-Cars/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://keenlab.tencent.com/en/whitepapers/Mercedes_Benz_Security_Research_Report_Final.pdf","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23906"},{"url":"https://github.com/advisories/GHSA-jx2c-9rxg-v58w"}],"sources":{"cve":[{"id":"CVE-2021-23906","description":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.","status":"published","published":"2021-05-13T18:56:32Z","modified":"2024-08-03T19:14:09.454Z","cvss":[{"version":"3.1","score":1.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:N/I:L/PR:N/S:U/UI:R","level":"low","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-10829","description":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.","status":"published","published":"2021-05-13T18:56:32Z","modified":"2024-08-03T19:14:09Z","cvss":[{"version":"3.1","score":1.8,"vector":"CVSS:3.1/AC:H/AV:P/A:N/C:N/I:L/PR:N/S:U/UI:R","level":"low"}],"updated_at":"2026-11-03T03:25:00.126172Z"}],"ghsa":[{"id":"GHSA-jx2c-9rxg-v58w","title":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz...","description":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.","status":"published","published":"2022-05-24T19:02:19Z","modified":"2023-01-29T05:06:41Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:46:04.961867Z"}],"nvd":[{"id":"CVE-2021-23906","description":"An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.","status":"published","published":"2021-05-13T19:15:07.753Z","modified":"2026-06-17T03:39:00.637Z","cvss":[{"version":"3.1","score":1.8,"vector":"CVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"},{"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":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}