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Vulnerability record · CVE-2026-1772 · published 24 February 2026

CVE-2026-1772: Hitachienergy rtu520 firmware vulnerability

Hitachienergy · Rtu520 Firmware

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.

5.3 CVSS 4.0 Medium EPSS 0.27% · top 82.7% CWE-280 · CWE-280
5.3CVSS 4.0 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://publisher.hitachienergy.com/preview?DocumentID=8DBD000237&LanguageCode=en&DocumentPartId=&Action=Launch Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-1773Hitachienergy rtu540 firmware vulnerabilityIEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Product is only affected if IEC 60870-5-10…EPSS 0.42%7.5CVE-2022-2081Hitachienergy rtu520 firmware out-of-bounds write vulnerabilityA vulnerability exists in the HCI Modbus TCP function included in the product versions listed above. If the HCI Modbus TCP is enabled and configured,…EPSS 0.64%6.1CVE-2023-5769Hitachienergy rtu520 firmware cross-site scripting vulnerabilityA vulnerability exists in the webserver that affects the RTU500 series product versions listed below. A malicious actor could perform cross-site scri…EPSS 0.41%6.1CVE-2023-5767Hitachienergy rtu520 firmware cross-site scripting vulnerabilityA vulnerability exists in the webserver that affects the RTU500 series product versions listed below. A malicious actor could perform cross-site scri…EPSS 0.39%6.1CVE-2023-5768Hitachienergy rtu520 firmware cross-site scripting vulnerabilityA vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU fra…EPSS 0.41%7.8CVE-2024-29748Android Pixel logic error allows local privilege escalationCVE-2024-29748 is a logic error in Android code that permits bypassing a security check, leading to local escalation of privilege. It affects Google …KEVEPSS 0.67%analysed

Source: NIST National Vulnerability Database (record CVE-2026-1772), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.