An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 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.
[POC] CVE-2026-8065 — CVE-2026-8065
CVE-2026-8065 PoC: Hitachi Energy RTU500 unauth firmware update bypass (CWE-306, CVSS 9.1). IoT/OT colored check + mass exploit — RTU500 fingerprint, firmware endpoint probe, lab-safe upload test. https://pocbit.org/pocs/cve-2026-8065
[POC] CVE-2026-8065 — CVE-2026-8065
CVE-2026-8065 PoC: Hitachi Energy RTU500 unauth firmware update bypass (CWE-306, CVSS 9.1). IoT/OT colored check + mass exploit — RTU500 fingerprint, firmware endpoint probe, lab-safe upload test. https://pocbit.org/pocs/cve-2026-8065
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
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