{"id":"CVE-2020-15787","aliases":["EUVD-2020-7770","GHSA-625f-424x-6j4w"],"status":"published","title":"A vulnerability has been identified in SIMATIC HMI United Comfort Panels (All versions). Affected...","description":"A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions \u003c= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01477,"percentile":0.74053,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-305"],"published":"2020-09-09T18:11:40Z","modified":"2026-06-17T02:57:11Z","products":[{"vendor":"siemens","product":"simatic hmi unified comfort panels"},{"vendor":"siemens","product":"simatic_hmi_united_comfort_panels_firmware"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-542525.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15787"},{"url":"https://github.com/advisories/GHSA-625f-424x-6j4w"}],"sources":{"cve":[{"id":"CVE-2020-15787","description":"A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions \u003c= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.","status":"published","published":"2020-09-09T18:11:40Z","modified":"2024-08-04T13:22:30.904Z","cwes":["CWE-305"],"updated_at":"2026-11-02T14:35:49.879248Z"}],"euvd":[{"id":"EUVD-2020-7770","description":"A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions \u003c= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.","status":"published","published":"2020-09-09T18:11:40Z","modified":"2024-08-04T13:22:30Z","updated_at":"2026-11-03T03:07:30.36726Z"}],"ghsa":[{"id":"GHSA-625f-424x-6j4w","title":"A vulnerability has been identified in SIMATIC HMI United Comfort Panels (All versions). Affected...","description":"A vulnerability has been identified in SIMATIC HMI United Comfort Panels (All versions). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.","status":"published","published":"2022-05-24T17:27:38Z","modified":"2023-01-29T05:03:58Z","cwes":["CWE-287","CWE-305"],"updated_at":"2026-11-02T14:45:26.555782Z"}],"nvd":[{"id":"CVE-2020-15787","description":"A vulnerability has been identified in SIMATIC HMI Unified Comfort Panels (All versions \u003c= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.","status":"published","published":"2020-09-09T19:15:19.99Z","modified":"2026-06-17T02:57:11.447Z","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":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-305","CWE-287"],"updated_at":"2026-11-02T14:06:14.981587Z"}]}}