CVE-2022-4608

highpriority · track · 30EPSS 0.007 · 53 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.71% (53rd) EPSS

CVSS 7.5 · high

Is it mine?

9 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

A vulnerability exists in 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 62351-3. After session resumption interval is expired an RTU500 initiated update of session parameters causes an unexpected restart due to a stack overflow.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedRTU500 Series CMUcisa_csaf_ot
Hitachi Energy recommends users update to CMU Firmware versions 13.3.3 or 13.4.1.
MitigationRTU500 Series CMUcisa_csaf_ot
Do not use process control systems for internet surfing, instant messaging, or receiving emails.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cybersecurity@hitachienergy.comexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-121USCWE-121US

affected products (9)

Products and version ranges known to be affected.

RTU500 series CMU: >= 13.3.1 | <= 13.3.2all versionscisa_csaf_otUS
Hitachi Energy RTU500 Series CMU13.3.1 | → 13.3.2cisa_csaf_otUS
Hitachi Energy RTU500 series≤ RTU500 series CMU Firmware version 13.3.1enisa_euvdEU
Hitachi Energy RTU500 series≤ RTU500 series CMU Firmware version 13.3.2enisa_euvdEU
Hitachi, Ltd. RTU500 series CMU13.3.1 → 13.3.2fstec_bduRU
hitachienergy rtu500 firmware= 13.3.1nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*
hitachienergy rtu500 firmware= 13.3.2nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*
hitachienergy rtu500 firmware= 13.3.3nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*
hitachienergy rtu500 firmware= 13.4.1nvdUScpe:2.3:o:hitachienergy:rtu500_firmware:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2016Hitachi Energy RTU500: Mehrere SchwachstellenDeutsch2023-08-08csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Hitachi Energy RTU500 ausnutzen, um einen Denial of Service Angriff durchzuführen.
ICSA-23-220-02Hitachi Energy RTU500 series2023-08-08icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could cause a buffer overflow and reboot of the product.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd cert_bund NVD CVE.org MITRE

published 2023-07-26modified 2026-06-17

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+16125 more

references (5)

External citations — patches, advisories, analysis.

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