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CVE-2026-1773

7.5 HIGH

IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame

Published: 2026-02-24 · Last updated: 2026-05-26

Severity and scoring

CVSS
7.5 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-184

Affected products

VendorProduct
hitachienergyrtu520_firmware, rtu530_firmware, rtu540_firmware

Description

IEC 60870-5-104 used in RTU500: Potential Denial of Service impact on reception of invalid U-format frame. Product is only affected if IEC 60870-5-104 bi-directional functionality is configured. Enabling secure communication following IEC 62351-3 does not remediate the vulnerability but mitigates the risk of exploitation.

Source: NVD

References

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