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CVE-2022-2502

A vulnerability exists in the HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability…

High7.5EPSS 0.65%
Published
Updated
Reserved
Assigned by
Hitachi Energy

Description

A vulnerability exists in the HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can only be exploited, if the HCI 60870-5-104 is configured with support for IEC 62351-5 and the CMU contains the license feature ‘Advanced security’ which must be ordered separately. If these preconditions are fulfilled, an attacker could exploit the vulnerability by sending a specially crafted message to the RTU500, causing the targeted RTU500 CMU to reboot. The vulnerability is caused by a missing input data validation which eventually if exploited causes an internal buffer to overflow in the HCI IEC 60870-5-104 function.

Scores

CVSS scores of CVE-2022-2502, by who scored it
Scored byCVSSScoreVector
Hitachi EnergyCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.65% · top 49% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Hitachi Energy · RTU500 series

    • affected RTU500 series CMU Firmware version 13.3.1
    • affected RTU500 series CMU Firmware version 13.3.2
    • unaffected RTU500 series CMU Firmware version 13.3.3
    • unaffected RTU500 series CMU Firmware version 13.4.1

What to do

Solution: Update to CMU Firmware versions 13.3.3 or 13.4.1.

Workaround: Disable the HCI IEC 60870-5-104 function or its IEC 62351-5 feature if it is not used.

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .