{"id":"CVE-2021-33032","aliases":["EUVD-2021-19752","GHSA-r7xr-9q5c-fh23"],"status":"published","title":"eQ-3 HomeMatic CCU2 2.57.5 and CCU3 3.57.5 devices allow remote code execution.","description":"A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.52161,"percentile":0.98968,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2021-07-22T17:45:35Z","modified":"2026-06-17T03:54:02Z","products":[{"vendor":"eq-3","product":"homematic_ccu2_firmware"},{"vendor":"eq-3","product":"homematic_ccu3_firmware"}],"references":[{"url":"https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM-CCU2-Changelog.2.59.7.pdf","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33032"},{"url":"https://github.com/advisories/GHSA-r7xr-9q5c-fh23"}],"sources":{"cve":[{"id":"CVE-2021-33032","description":"A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.","status":"published","published":"2021-07-22T17:45:35Z","modified":"2024-08-03T23:42:19.135Z","updated_at":"2026-11-02T14:33:10.555814Z"}],"euvd":[{"id":"EUVD-2021-19752","description":"A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.","status":"published","published":"2021-07-22T17:45:35Z","modified":"2024-08-03T23:42:19Z","updated_at":"2026-11-03T03:24:35.30045Z"}],"ghsa":[{"id":"GHSA-r7xr-9q5c-fh23","title":"eQ-3 HomeMatic CCU2 2.57.5 and CCU3 3.57.5 devices allow remote code execution.","description":"eQ-3 HomeMatic CCU2 2.57.5 and CCU3 3.57.5 devices allow remote code execution.","status":"published","published":"2022-05-24T19:08:56Z","modified":"2023-01-30T05:00:57Z","cwes":["CWE-78"],"updated_at":"2026-11-02T14:46:18.635114Z"}],"nvd":[{"id":"CVE-2021-33032","description":"A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.","status":"published","published":"2021-07-22T18:15:23.177Z","modified":"2026-06-17T03:54:02.65Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:56.185362Z"}]}}