Medium 5.3Published Feb 24, 2026

CVE-2026-1772RTU500 web interface: An unprivileged user can read user management information.

Updated under an hour ago (Oct 26, 2026, 2:20 PM ET)

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It affects Hitachi Energy RTU500 series CMU firmware and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Hitachi Energy RTU500 series CMU firmware

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-280
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Hitachi Energy
NVD analysis: Analyzed
Record last updated: Feb 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Hitachi Energy RTU500 series CMU firmware hitachi_energy:rtu500_series_cmu_firmware (from the name)	from 12.7.1 through 12.7.7; from 13.5.1 through 13.5.4; from 13.6.1 through 13.6.2; from 13.7.1 through 13.7.7; 13.8.1	CNA record
hitachienergy rtu520_firmware hitachienergy:rtu520_firmware	from 12.7.1 through 12.7.7; from 13.5.1 through 13.5.4; from 13.6.1 through 13.6.2; from 13.7.1 before 13.7.8; 13.8.1	NVD
hitachienergy rtu530_firmware hitachienergy:rtu530_firmware	from 12.7.1 through 12.7.7; from 13.5.1 through 13.5.4; from 13.6.1 through 13.6.2; from 13.7.1 before 13.7.8; 13.8.1	NVD
hitachienergy rtu540_firmware hitachienergy:rtu540_firmware	from 12.7.1 through 12.7.7; from 13.5.1 through 13.5.4; from 13.6.1 through 13.6.2; from 13.7.1 before 13.7.8; 13.8.1	NVD
hitachienergy rtu560_firmware hitachienergy:rtu560_firmware	from 12.7.1 through 12.7.7; from 13.5.1 through 13.5.4; from 13.6.1 through 13.6.2; from 13.7.1 before 13.7.8; 13.8.1	NVD

References

References

https://publisher.hitachienergy.com/preview?DocumentID=8DBD000237&LanguageCode=en&DocumentPartId=&Action=Launch	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.