{"cve":"CVE-2026-8479","nvd":{"published":"2026-05-26T14:16:41.247","modified":"2026-07-23T11:10:00.120","status":"Deferred","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.","cvss_v4":{"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","score":6.9},"cvss_v3":null,"cwes":["CWE-476"],"references":["https://publisher.hitachienergy.com/preview?DocumentID=8DBD000252&LanguageCode=en&DocumentPartId=&Action=Launch"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-8479","score":0.0017,"percentile":0.06361,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}