CVE-2026-66109 (GCVE-0-2026-66109)

Vulnerability from cvelistv5 – Published: 2026-08-25 06:27 – Updated: 2026-08-25 19:02
VLAI
Summary
A missing authorization vulnerability exists in SKYSEA Client View and SKYMEC IT Manager. If this vulnerability is exploited, an attacker who can log in to the Windows system on which the affected product is installed may execute arbitrary code with SYSTEM privilege.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:02 UTC
CWE
Impacted products
Vendor Product Version CPE status
Sky Co., LTD. SKYSEA Client View Affected: 0 , ≤ Ver.21.210.01f (semver)
guessed Create a notification for this product.
Sky Co., LTD. SKYMEC IT Manager Affected: 2023.225.03a
Affected: 2024.005.10a
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-66109",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T19:02:13.183956Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-25T19:02:20.730Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "SKYSEA Client View",
          "vendor": "Sky Co., LTD.",
          "versions": [
            {
              "lessThanOrEqual": "Ver.21.210.01f",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "SKYMEC IT Manager",
          "vendor": "Sky Co., LTD.",
          "versions": [
            {
              "status": "affected",
              "version": "2023.225.03a"
            },
            {
              "status": "affected",
              "version": "2024.005.10a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A missing authorization vulnerability exists in SKYSEA Client View and SKYMEC IT Manager. If this vulnerability is exploited, an attacker who can log in to the Windows system on which the affected product is installed may execute arbitrary code with SYSTEM privilege."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "vectorString": "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",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "Missing authorization",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-25T06:27:50.328Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://www.skyseaclientview.net/news/260824_01/"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN33423625/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2026-66109",
    "datePublished": "2026-08-25T06:27:50.328Z",
    "dateReserved": "2026-08-05T03:02:30.692Z",
    "dateUpdated": "2026-08-25T19:02:20.730Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-66109",
      "date": "2026-08-25",
      "epss": "0.00161",
      "percentile": "0.05517"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-66109\",\"sourceIdentifier\":\"vultures@jpcert.or.jp\",\"published\":\"2026-08-25T07:17:10.310\",\"lastModified\":\"2026-08-25T19:16:52.463\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A missing authorization vulnerability exists in SKYSEA Client View and SKYMEC IT Manager. If this vulnerability is exploited, an attacker who can log in to the Windows system on which the affected product is installed may execute arbitrary code with SYSTEM privilege.\"}],\"affected\":[{\"source\":\"vultures@jpcert.or.jp\",\"affectedData\":[{\"vendor\":\"Sky Co., LTD.\",\"product\":\"SKYSEA Client View\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"Ver.21.210.01f\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Sky Co., LTD.\",\"product\":\"SKYMEC IT Manager\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"2023.225.03a\",\"status\":\"affected\"},{\"version\":\"2024.005.10a\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"vultures@jpcert.or.jp\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"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\",\"baseScore\":8.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"HIGH\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV30\":[{\"source\":\"vultures@jpcert.or.jp\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-25T19:02:13.183956Z\",\"id\":\"CVE-2026-66109\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"vultures@jpcert.or.jp\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"references\":[{\"url\":\"https://jvn.jp/en/jp/JVN33423625/\",\"source\":\"vultures@jpcert.or.jp\"},{\"url\":\"https://www.skyseaclientview.net/news/260824_01/\",\"source\":\"vultures@jpcert.or.jp\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-66109\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-25T19:02:13.183956Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-25T19:02:17.099Z\"}}], \"cna\": {\"metrics\": [{\"format\": \"CVSS\", \"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en-US\", \"value\": \"GENERAL\"}]}, {\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.5, \"baseSeverity\": \"HIGH\", \"vectorString\": \"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\"}, \"scenarios\": [{\"lang\": \"en-US\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Sky Co., LTD.\", \"product\": \"SKYSEA Client View\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"Ver.21.210.01f\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Sky Co., LTD.\", \"product\": \"SKYMEC IT Manager\", \"versions\": [{\"status\": \"affected\", \"version\": \"2023.225.03a\"}, {\"status\": \"affected\", \"version\": \"2024.005.10a\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://www.skyseaclientview.net/news/260824_01/\"}, {\"url\": \"https://jvn.jp/en/jp/JVN33423625/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A missing authorization vulnerability exists in SKYSEA Client View and SKYMEC IT Manager. If this vulnerability is exploited, an attacker who can log in to the Windows system on which the affected product is installed may execute arbitrary code with SYSTEM privilege.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"Missing authorization\"}]}], \"providerMetadata\": {\"orgId\": \"ede6fdc4-6654-4307-a26d-3331c018e2ce\", \"shortName\": \"jpcert\", \"dateUpdated\": \"2026-08-25T06:27:50.328Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-66109\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-25T19:02:20.730Z\", \"dateReserved\": \"2026-08-05T03:02:30.692Z\", \"assignerOrgId\": \"ede6fdc4-6654-4307-a26d-3331c018e2ce\", \"datePublished\": \"2026-08-25T06:27:50.328Z\", \"assignerShortName\": \"jpcert\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Loading…