{"id":"CVE-2021-23909","aliases":["EUVD-2021-10832","GHSA-xgjg-42m3-rrw5"],"status":"published","title":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles...","description":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AC:L/AV:L/A:H/C:L/I:H/PR:H/S:U/UI:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.02361,"percentile":0.83888,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-05-13T18:57:38Z","modified":"2026-06-17T03:39:01Z","products":[{"vendor":"mercedes-benz","product":"hermes"}],"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-2021-23909"},{"url":"https://github.com/advisories/GHSA-xgjg-42m3-rrw5"}],"sources":{"cve":[{"id":"CVE-2021-23909","description":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.","status":"published","published":"2021-05-13T18:57:38Z","modified":"2024-08-03T19:14:09.561Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AC:L/AV:L/A:H/C:L/I:H/PR:H/S:U/UI:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2021-10832","description":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.","status":"published","published":"2021-05-13T18:57:38Z","modified":"2024-08-03T19:14:09Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AC:L/AV:L/A:H/C:L/I:H/PR:H/S:U/UI:N","level":"medium"}],"updated_at":"2026-11-03T03:25:00.126172Z"}],"ghsa":[{"id":"GHSA-xgjg-42m3-rrw5","title":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles...","description":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.","status":"published","published":"2022-05-24T19:02:19Z","modified":"2023-01-29T05:07:38Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:46:10.663769Z"}],"nvd":[{"id":"CVE-2021-23909","description":"An issue was discovered in HERMES 2.1 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. The SH2 MCU allows remote code execution.","status":"published","published":"2021-05-13T19:15:07.87Z","modified":"2026-06-17T03:39:01.027Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H","level":"medium","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"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}