CVE-2026-8066
A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500…
- Risk score
- 70/100
- CVSS
- 9.1 v3.1
- Exploit chance (30 days)
- 0.7%
- Published
- 29 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to write or overwrite arbitrary files on the device file system. Depending on the files affected, successful exploitation could result in unauthorized modification of de…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.1 critical
- Remotely exploitable without logging in
References
Original description
A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to write or overwrite arbitrary files on the device file system. Depending on the files affected, successful exploitation could result in unauthorized modification of device data or disruption of the device’s intended operation.
Last activity 29 Sep 2026. Patch Forecast updates every hour.