Vulnerability-Lookup

CVE-2026-9853 (GCVE-0-2026-9853)

Vulnerability from cvelistv5 – Published: 2026-09-03 07:53 – Updated: 2026-09-03 12:49

Summary

A vulnerability exists in SYS600 which allows any user authenticated to the operating system of the server hosting the application to read and modify application objects without being authenticated to the SYS600 system itself. Only the SYS600 system users should be permitted to view and modify application objects.

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-03 12:49 UTC

CWE

CWE-303 - Incorrect implementation of authentication algorithm

Assigner

Hitachi Energy

References

1 reference

URL	Tags
https://publisher.hitachienergy.com/preview?Docum…

Impacted products

1 product

Vendor	Product	Version	CPE status
Hitachi Energy	MicroSCADA SYS600	Affected: 10.0 , ≤ 10.8 (custom)	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-9853

Vulnerability from fkie_nvd - Published: 2026-09-03 13:06 - Updated: 2026-09-03 16:43

Severity

8.5 (High) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	cybersecurity@hitachienergy.com	https://publisher.hitachienergy.com/preview?DocumentID=8DBD000249&LanguageCode=en&DocumentPartId=&Action=Launch

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "MicroSCADA SYS600",
          "vendor": "Hitachi Energy",
          "versions": [
            {
              "lessThanOrEqual": "10.8",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cybersecurity@hitachienergy.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability exists in SYS600 which allows any user authenticated to the operating system of the server hosting the application to read and modify application objects without being authenticated to the SYS600 system itself.\n\nOnly the SYS600 system users should be permitted to view and modify application objects."
    }
  ],
  "id": "CVE-2026-9853",
  "lastModified": "2026-09-03T16:43:15.293",
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          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
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          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
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          "valueDensity": "NOT_DEFINED",
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GHSA-9HQ3-8GR4-57HV

Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-03 15:32

Details

Only the SYS600 system users should be permitted to view and modify application objects.

Severity

8.5 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-9853"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-303"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T13:06:25Z",
    "severity": "HIGH"
  },
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  "id": "GHSA-9hq3-8gr4-57hv",
  "modified": "2026-09-03T15:32:22Z",
  "published": "2026-09-03T15:32:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9853"
    },
    {
      "type": "WEB",
      "url": "https://publisher.hitachienergy.com/preview?DocumentID=8DBD000249\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch"
    }
  ],
  "schema_version": "1.4.0",
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      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-9853 (GCVE-0-2026-9853)

FKIE_CVE-2026-9853

GHSA-9HQ3-8GR4-57HV

Tags

Sightings

Nomenclature