{"schema":"threatline.record/2","record":{"id":"CVE-2026-8065","aliases":[],"summary":"An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to upload arbitrary firmware through a crafted P","details":"An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to upload arbitrary firmware through a crafted POST request. Successful exploitation could allow the attacker to modify device functionality or compromise the integrity or availability of the device.","categories":["Unclassified"],"product":"RTU500 series CMU firmware","vendor":"Hitachi Energy","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-8065","source_modified_at":"2026-09-29T15:54:11.550Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"RTU500 series CMU firmware","vendor":"Hitachi Energy","versions":[{"status":"affected","version":"9.0","lessThan":"12.0","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-8065","source_modified_at":"2026-09-29T15:54:11.550Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"RTU500 series CMU firmware","ecosystem":null},"version":"12.0","basis":"first unaffected version stated in the CVE record"}],"cvss":9.1,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00577,"percentile":0.46847,"score_date":"2026-10-23"},"published_at":"2026-09-29T09:20:07.276Z","modified_at":"2026-09-29T15:54:11.550Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-8065","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-29T15:54:11.550Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-8065","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://publisher.hitachienergy.com/preview?DocumentID=8DBD000251&LanguageCode=en&DocumentPartId=&Action=Launch"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-29T15:53:38.135052Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-29T15:54:11.550Z","content_hash":"b6101c78ca23a0d317500b600c9824dd779c923016f54f53fbd3d6bb419f8314"}}