CVE-2026-8066: Hitachi Energy RTU500 series CMU firmware vulnerability
Hitachi Energy · RTU500 series CMU firmware
Vendor fix available · Affected: Hitachi Energy RTU500 series CMU firmware · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 55% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Hitachi Energy · RTU500 series CMU firmwarefrom 9.0 before 12.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Hitachi Energy
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-8066 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.