{"schemaVersion":3,"id":"CVE-2023-5768","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below.\nIncomplete or wrong received APDU frame layout may\ncause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer\nwith wrong length information of APDU or delayed reception\nof data octets.\n\n\nOnly communication link of affected HCI IEC 60870-5-104\nis blocked. If attack sequence stops the communication to\nthe previously attacked link gets normal again.","dates":{"published":"2023-12-04T14:33:47.898Z","modified":"2024-08-02T08:07:32.849Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.1,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00412,"percentile":0.34286,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00412},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00412,"percentile":0.34286}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00412,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0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12.6.9","noFixRecorded":false,"fixedIn":null},{"text":"RTU500 series CMU Firmware version 12.7.1 – 12.7.6","noFixRecorded":false,"fixedIn":null},{"text":"RTU500 series CMU Firmware version 13.2.1 – 13.2.6","noFixRecorded":false,"fixedIn":null},{"text":"RTU500 series CMU Firmware version 13.4.1 – 13.4.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"RTU500 series CMU Firmware version 12.0.1 – 12.0.14 | RTU500 series CMU Firmware version 12.2.1 – 12.2.11 | RTU500 series CMU Firmware version 12.4.1 – 12.4.11 | RTU500 series CMU Firmware version 12.6.1 – 12.6.9 | RTU500 series CMU Firmware version 12.7.1 – 12.7.6 | RTU500 series CMU Firmware version 13.2.1 – 13.2.6 | RTU500 series CMU Firmware version 13.4.1 – 13.4.3","eol":null,"hubHref":"/vendor/hitachi_energy/rtu500_series"},{"vendor":"hitachienergy","product":"rtu520_firmware","name":"rtu520 firmware","label":"rtu520_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"≥ 12.0.1, ≤ 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13.4.1, ≤ 13.4.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 12.0.1, ≤ 12.0.14 | ≥ 12.2.1, ≤ 12.2.11 | ≥ 12.4.1, ≤ 12.4.11 | ≥ 12.6.1, ≤ 12.6.9 | ≥ 12.7.1, ≤ 12.7.6 | ≥ 13.2.1, ≤ 13.2.6 | ≥ 13.4.1, ≤ 13.4.3","eol":null,"hubHref":"/vendor/hitachienergy/rtu560"}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://publisher.hitachienergy.com/preview?DocumentId=8DBD000176&languageCode=en&Preview=true","label":"publisher.hitachienergy.com/preview?DocumentId=8DBD000176&languageCode=en&Preview=true","hostname":"publisher.hitachienergy.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-12-04T14:33:47.898Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-02T08:07:32.849Z","label":"Last modified","detail":"Vulnerability information 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