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CVE-2026-1773

nvd nist
Published: Feb 24, 2026Modified: Jun 17, 2026

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8.7
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:X/V:X/RE:X/U:X
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CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:X/V:X/RE:X/U:XShow less
Source: cybersecurity@hitachienergy.com (Secondary)

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.

Affected (20)

Hitachienergy
4 products
Rtu540 Firmware
Rtu560 Firmware
Rtu520 Firmware
Rtu530 Firmware
Configuration A
5 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Hitachienergy
Rtu540 Firmware
From 12.7.1 to 12.7.7
Rtu540 Firmware
From 13.5.1 to 13.5.4
Rtu540 Firmware
From 13.6.1 to 13.6.2
Rtu540 Firmware
From 13.7.1 to 13.7.8
Rtu540 Firmware
Version 13.8.1
Running on/withPlatform Versions
Hitachienergy
Rtu540
All versions
Configuration B
5 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Hitachienergy
Rtu560 Firmware
From 12.7.1 to 12.7.7
Rtu560 Firmware
From 13.5.1 to 13.5.4
Rtu560 Firmware
From 13.6.1 to 13.6.2
Rtu560 Firmware
From 13.7.1 to 13.7.8
Rtu560 Firmware
Version 13.8.1
Running on/withPlatform Versions
Hitachienergy
Rtu560
All versions
Configuration C
5 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Hitachienergy
Rtu520 Firmware
From 12.7.1 to 12.7.7
Rtu520 Firmware
From 13.5.1 to 13.5.4
Rtu520 Firmware
From 13.6.1 to 13.6.2
Rtu520 Firmware
From 13.7.1 to 13.7.8
Rtu520 Firmware
Version 13.8.1
Running on/withPlatform Versions
Hitachienergy
Rtu520
All versions
Configuration D
5 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Hitachienergy
Rtu530 Firmware
From 12.7.1 to 12.7.7
Rtu530 Firmware
From 13.5.1 to 13.5.4
Rtu530 Firmware
From 13.6.1 to 13.6.2
Rtu530 Firmware
From 13.7.1 to 13.7.8
Rtu530 Firmware
Version 13.8.1
Running on/withPlatform Versions
Hitachienergy
Rtu530
All versions

Related CWEs

CWE-184
Incomplete List of Disallowed Inputs
The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses.

References (1)

Source: cybersecurity@hitachienergy.com
Vendor Advisory

Timeline

No history available yet.