{"id":"CVE-2026-8479","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-8479","generatedAt":"2026-10-28T02:22:50.162Z","title":"IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact.","description":"IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable\nfor a NULL pointer dereferencing, if a specially crafted\nsequence of messages is sent for a certain time, causing\nDenial of Service impact.\nProduct is only affected if IEC 60870-5-104 functionality in\nbidirectional mode (BCI) is configured.","published":"2026-05-26T14:16:41.000Z","lastModified":"2026-07-23T11:10:00.000Z","status":"Deferred","sourceIdentifier":"cybersecurity@hitachienergy.com","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-476"],"affected":[],"epss":{"score":0.0017,"percentile":0.06347,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://publisher.hitachienergy.com/preview?DocumentID=8DBD000252&LanguageCode=en&DocumentPartId=&Action=Launch","source":"cybersecurity@hitachienergy.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-8479","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}