IEC 61850 MMS-Server Vulnerability in multiple Hitachi Energy Products
A vulnerability exists in the IEC 61850 communication stack that affects multiple Hitachi Energy products. An attacker could exploit the vulnerability by using a specially crafted message sequence, to force the IEC 61850 MMS-server communication stack, to stop accepting new MMS-client connections. Already existing/established client-server connections are not affected. List of affected CPEs: * cpe:2.3:o:hitachienergy:fox61x_tego1:r15b08:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:fox61x_tego1:r2a16_3:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:fox61x_tego1:r2a16:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:fox61x_tego1:r1e01:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:fox61x_tego1:r1d02:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:fox61x_tego1:r1c07:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:fox61x_tego1:r1b02:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:gms600:1.3.0:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.1.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.5.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.6.0:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.6.0.1:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.7.0:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.7.2:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:1.8.0:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:2.0.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:2.1.0.4:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:itt600_sa_explorer:2.1.0.5:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.2:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.2.1:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.3:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.3.1:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.4:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:microscada_x_sys600:10.4.1:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:mms:2.2.3:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:pwc600:1.0:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:pwc600:1.1:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:pwc600:1.2:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:reb500:7:*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:reb500:8:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion670:1.2.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion670:2.0.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion650:1.1.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion650:1.3.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion650:2.1.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion670:2.1.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relionSAM600-IO:2.2.1:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relionSAM600-IO:2.2.5:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion670:2.2.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:relion650:2.2.*:*:*:*:*:*:*:* * cpe:2.3:o:hitachienergy:rtu500cmu:12.*.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:rtu500cmu:13.*.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:txpert_hub_coretec_4:2.*:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:txpert_hub_coretec_4:3.0:*:*:*:*:*:*:* * cpe:2.3:a:hitachienergy:txpert_hub_coretec_5:3.0:*:*:*:*:*:*:*
- Published
- Feb 21, 2023
- Updated
- Jun 17, 2026
- EPSS
- 1.1% · 65th percentile
- CWE
- CWE-404
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.5
- CNA · Hitachi Energy
- 5.9
- 1.6 point gap
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| hitachienergy | sys600 firmware | cpe:2.3:o:hitachienergy:sys600_firmware |
| hitachienergy | sys600 | cpe:2.3:h:hitachienergy:sys600 |
| hitachienergy | rtu500 firmware | cpe:2.3:o:hitachienergy:rtu500_firmware |
| hitachienergy | rtu500 | cpe:2.3:h:hitachienergy:rtu500 |
| hitachienergy | reb500 firmware | cpe:2.3:o:hitachienergy:reb500_firmware |
| hitachienergy | reb500 | cpe:2.3:h:hitachienergy:reb500 |
| hitachienergy | pwc600 firmware | cpe:2.3:o:hitachienergy:pwc600_firmware |
| hitachienergy | pwc600 | cpe:2.3:h:hitachienergy:pwc600 |
| hitachienergy | modular switchgear monitoring firmware | cpe:2.3:o:hitachienergy:modular_switchgear_monitoring_firmware |
| hitachienergy | modular switchgear monitoring | cpe:2.3:h:hitachienergy:modular_switchgear_monitoring |
| hitachienergy | itt600 sa explorer | cpe:2.3:a:hitachienergy:itt600_sa_explorer |
| hitachienergy | relion sam600-io firmware | cpe:2.3:o:hitachienergy:relion_sam600-io_firmware |
and 13 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- hitachienergy fox615 tego1 firmwarer15b08
- hitachienergy fox615 tego1 firmwarer1b02
- hitachienergy fox615 tego1 firmwarer1c07
- hitachienergy fox615 tego1 firmwarer1d02
- hitachienergy fox615 tego1 firmwarer1e01
- hitachienergy fox615 tego1 firmwarer2b16
- hitachienergy fox615 tego1 firmwarer2b16_03
- hitachienergy gms600 firmware1.3.0
- hitachienergy itt600 sa explorer1.1.0
- hitachienergy itt600 sa explorer1.1.1
- hitachienergy itt600 sa explorer1.1.2
- hitachienergy itt600 sa explorer1.5.0
- hitachienergy itt600 sa explorer1.5.1
- hitachienergy itt600 sa explorer1.6.0
- hitachienergy itt600 sa explorer1.6.0.1
- hitachienergy itt600 sa explorer1.7.0
- hitachienergy itt600 sa explorer1.7.2
- hitachienergy itt600 sa explorer1.8.0
- hitachienergy itt600 sa explorer2.0.1
- hitachienergy itt600 sa explorer2.0.2
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Hitachi Energy). Independent of NVD's CPE analysis and usually ahead of it.
Hitachi Energy FOX61x TEGO1
- tego1_r15b08, tego1_r2a16_03, tego1_r2a16, tego1_r1e01, tego1_r1d02, tego1_r1c07, tego1_r1b02affected
- tego1_r16a11not affected
Hitachi Energy GMS600
- GMS600 1.3affected
Hitachi Energy ITT600 SA Explorer
- ITT600 SA Explorer 2.1.1.2not affected
- ITT600 SA Explorer 1.1.0, ITT600 SA Explorer 1.1.1, ITT600 SA Explorer 1.1.2, ITT600 SA Explorer 1.5.0, ITT600 SA Explorer 1.5.1, ITT600 SA Explorer 1.6.0, ITT600 SA Explorer 1.6.0.1, ITT600 SA Explorer 1.7.0, ITT600 SA Explorer 1.7.2, ITT600 SA Explorer 1.8.0, ITT600 SA Explorer 2.0.1, ITT600 SA Explorer 2.0.2 … (+6)affected
Hitachi Energy MicroSCADA X SYS600
- SYS600 10.4.1not affected
- SYS600 10, SYS600 10.1, SYS600 10.1.1, SYS600 10.2, SYS600 10.2.1, SYS600 10.3, SYS600 10.3.1, SYS600 10.4affected
Hitachi Energy MSM
- MSM 2.2.3;0affected
Hitachi Energy PWC600
- PWC600 1.0, PWC600 1.1, PWC600 1.2affected
Hitachi Energy REB500
- REB500 8.3.3.0not affected
- REB500 7.0 and later · before 7.*affected · 7.*
- REB500 8.0 and later · before 8.*affected · 8.*
Hitachi Energy Relion® 650
- Relion 650 1.1, Relion 650 1.3, Relion 650 2.1, Relion 650 2.2.0, Relion 650 2.2.1, Relion 650 2.2.2, Relion 650 2.2.3, Relion 650 2.2.4, Relion 650 2.2.5affected
Hitachi Energy Relion® 670
- Relion 670 1.2, Relion 670 2.0, Relion 670 version 2.1, Relion 670 2.2.0, Relion 670 2.2.1, Relion 670 2.2.2, Relion 670 2.2.3, Relion 670 2.2.4, Relion 670 2.2.5affected
Hitachi Energy RTU500
- RTU500 13.4.1affected
- RTU500 12.0.15, RTU500 12.2.12, RTU500 12.4.12, RTU500 12.6.9, RTU500 12.7.5, RTU500 13.2.6, RTU500 13.3.4, RTU500 13.4.2not affected
- RTU500 12.0.1 and later · up to and including 12.0.14affected · 12.0.14
- RTU500 12.2.1 and later · up to and including 12.2.11affected · 12.2.11
- RTU500 12.4.1 and later · up to and including 12.4.11affected · 12.4.11
- RTU500 12.6.1 and later · up to and including 12.6.8affected · 12.6.8
- RTU500 12.7.1 and later · up to and including 12.7.4affected · 12.7.4
- RTU500 13.2.1 and later · up to and including 13.2.5affected · 13.2.5
- RTU500 13.3.1 and later · up to and including 13.3.3affected · 13.3.3
Hitachi Energy SAM600-IO
- Relion SAM600-IO 2.2.1, Relion SAM600-IO 2.2.5affected
Hitachi Energy TXpert Hub CoreTec 4
- CoreTec 4 version 2.0.*, CoreTec 4 version 2.1.*, CoreTec 4 version 2.2.*, CoreTec 4 version 2.3.*, CoreTec 4 version 2.4.*, CoreTec 4 version 3.0.*affected
Same product
hitachienergy: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-1168This vulnerability allows local attackers to escalate privileges on vulnerable installations of ABB MicroSCADA 9.3 with FP 1-2-3.31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Hitachi Energy REB500 | 7.* | Vendor (CNA) |
| Hitachi Energy REB500 | 8.* | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-404 · Improper Resource Shutdown or ReleaseCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- search.abb.com/library/Download.aspx?DocumentID=8DBD000124&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000125&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000126&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000127&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000128&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000129&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000130&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000131&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000132&LanguageCode=en&DocumentPartId=&Action=Launch
- search.abb.com/library/Download.aspx?DocumentID=8DBD000133&LanguageCode=en&DocumentPartId=&Action=Launch
Vendor advisories and official records. Exploit/PoC links are deliberately left out.