{"id":"CVE-2019-9583","aliases":["EUVD-2019-18954","GHSA-49c8-8f9w-rcc6"],"status":"published","title":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service...","description":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01877,"percentile":0.79552,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2019-08-14T19:47:54Z","modified":"2026-06-17T02:43:59Z","products":[{"vendor":"eq-3","product":"homematic_ccu2_firmware"},{"vendor":"eq-3","product":"homematic_ccu3_firmware"}],"references":[{"url":"https://github.com/psytester/psytester.github.io/blob/master/_posts/hacking_and_pentests/CVEs/2019-03-27-CVE-2019-9583.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://psytester.github.io/CVE-2019-9583/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-9583"},{"url":"https://github.com/advisories/GHSA-49c8-8f9w-rcc6"}],"sources":{"cve":[{"id":"CVE-2019-9583","description":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.","status":"published","published":"2019-08-14T19:47:54Z","modified":"2024-08-04T21:54:44.498Z","updated_at":"2026-11-02T14:20:20.081405Z"}],"euvd":[{"id":"EUVD-2019-18954","description":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.","status":"published","published":"2019-08-14T19:47:54Z","modified":"2024-08-04T21:54:44Z","updated_at":"2026-11-03T03:06:38.242317Z"}],"ghsa":[{"id":"GHSA-49c8-8f9w-rcc6","title":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service...","description":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.","status":"published","published":"2022-05-24T16:53:39Z","modified":"2023-01-28T05:07:07Z","updated_at":"2026-11-02T14:44:29.724528Z"}],"nvd":[{"id":"CVE-2019-9583","description":"eQ-3 Homematic CCU2 and CCU3 obtain session IDs without login. This allows a Denial of Service and is a starting point for other attacks. Affected versions for CCU2: 2.35.16, 2.41.5, 2.41.8, 2.41.9, 2.45.6, 2.45.7, 2.47.10, 2.47.12, 2.47.15. Affected versions for CCU3: 3.41.11, 3.43.16, 3.45.5, 3.45.7, 3.47.10, 3.47.15.","status":"published","published":"2019-08-14T20:15:11.79Z","modified":"2026-06-17T02:43:59.507Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:05:22.878504Z"}]}}