{"schemaVersion":3,"id":"CVE-2020-6994","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A buffer overflow vulnerability was found in some devices of Hirschmann Automation and Control HiOS and HiSecOS. The vulnerability is due to improper parsing of URL arguments. An attacker could exploit this vulnerability by specially crafting HTTP requests to overflow an internal buffer. The following devices using HiOS Version 07.0.02 and lower are affected: RSP, RSPE, RSPS, RSPL, MSP, EES, EES, EESX, GRS, OS, RED. The following devices using HiSecOS Version 03.2.00 and lower are affected: EAGLE20/30.","dates":{"published":"2020-04-03T18:04:59.000Z","modified":"2024-08-04T09:18:02.906Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":7.5,"severity":"high","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01646,"percentile":0.76106,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01646},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01646,"percentile":0.76106}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01646,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01646,"percent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Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-04-03T18:04:59.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T09:18:02.906Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T13:36:34.785Z","stale":false,"partial":false}}