CVE-2026-1772
Medium
Description
RTU500 web interface: An unprivileged user can read user management information. The information cannot be accessed via the RTU500 web user interface but requires further tools like browser development utilities to access them without required privileges.
SeverityMedium
CVSS5.3
Exploit probability—
ProductHitachienergy Rtu520 Firmware
PublishedFeb 24, 2026
First seenFeb 24, 2026
Weakness typeCWE-280CWE-280
How to fix
Update
- hitachienergy rtu520_firmware13.7.8 or later
- hitachienergy rtu530_firmware13.7.8 or later
- hitachienergy rtu540_firmware13.7.8 or later
- hitachienergy rtu560_firmware13.7.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hitachienergy rtu520_firmware | 12.7.1 ≤ v ≤ 12.7.7, 13.5.1 ≤ v ≤ 13.5.4, 13.6.1 ≤ v ≤ 13.6.2, 13.7.1 ≤ v < 13.7.8, 13.8.1 | 13.7.8 |
| hitachienergy rtu530_firmware | 12.7.1 ≤ v ≤ 12.7.7, 13.5.1 ≤ v ≤ 13.5.4, 13.6.1 ≤ v ≤ 13.6.2, 13.7.1 ≤ v < 13.7.8, 13.8.1 | 13.7.8 |
| hitachienergy rtu540_firmware | 12.7.1 ≤ v ≤ 12.7.7, 13.5.1 ≤ v ≤ 13.5.4, 13.6.1 ≤ v ≤ 13.6.2, 13.7.1 ≤ v < 13.7.8, 13.8.1 | 13.7.8 |
| hitachienergy rtu560_firmware | 12.7.1 ≤ v ≤ 12.7.7, 13.5.1 ≤ v ≤ 13.5.4, 13.6.1 ≤ v ≤ 13.6.2, 13.7.1 ≤ v < 13.7.8, 13.8.1 | 13.7.8 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.