CVE-2026-9259 (GCVE-0-2026-9259)
Vulnerability from cvelistv5
Published
2026-06-15 23:36
Modified
2026-06-16 12:43
Severity ?
7.1 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • CWE-295 - Improper certificate validation
Summary
Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier
References
Impacted products
Vendor Product Version
Canon Inc. EOS Network Setting Tool for Windows Version: 1.5.0 or earlier
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-9259",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-16T12:43:13.289990Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-16T12:43:21.760Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "EOS Network Setting Tool for Windows",
          "vendor": "Canon Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "1.5.0 or earlier"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "EOS Network Setting Tool for macOS",
          "vendor": "Canon Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "1.5.0 or earlier"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was discovered by Ryan Hausknecht (@haus3c)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier"
            }
          ],
          "value": "Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier"
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295 Improper certificate validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-15T23:36:28.761Z",
        "orgId": "f98c90f0-e9bd-4fa7-911b-51993f3571fd",
        "shortName": "Canon"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://psirt.canon/advisory-information/cp2026-005/"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://canon.jp/support/support-info/260615vulnerability-response"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-tool"
        },
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.canon-europe.com/support/product-security/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f98c90f0-e9bd-4fa7-911b-51993f3571fd",
    "assignerShortName": "Canon",
    "cveId": "CVE-2026-9259",
    "datePublished": "2026-06-15T23:36:28.761Z",
    "dateReserved": "2026-05-21T23:14:50.204Z",
    "dateUpdated": "2026-06-16T12:43:21.760Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-9259\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-16T12:43:13.289990Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-16T12:43:17.763Z\"}}], \"cna\": {\"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"This issue was discovered by Ryan Hausknecht (@haus3c)\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 7.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"PASSIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Canon Inc.\", \"product\": \"EOS Network Setting Tool for Windows\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.5.0 or earlier\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Canon Inc.\", \"product\": \"EOS Network Setting Tool for macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.5.0 or earlier\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://psirt.canon/advisory-information/cp2026-005/\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://canon.jp/support/support-info/260615vulnerability-response\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.usa.canon.com/about-us/to-our-customers/cpa2026-005-vulnerability-remediation-for-eos-network-setting-tool\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.canon-europe.com/support/product-security/\", \"tags\": [\"vendor-advisory\"]}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.2\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Improper validation of server certificates in Canon EOS Network Setting Tool Version 1.5.0 or earlier\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-295\", \"description\": \"CWE-295 Improper certificate validation\"}]}], \"providerMetadata\": {\"orgId\": \"f98c90f0-e9bd-4fa7-911b-51993f3571fd\", \"shortName\": \"Canon\", \"dateUpdated\": \"2026-06-15T23:36:28.761Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-9259\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-16T12:43:21.760Z\", \"dateReserved\": \"2026-05-21T23:14:50.204Z\", \"assignerOrgId\": \"f98c90f0-e9bd-4fa7-911b-51993f3571fd\", \"datePublished\": \"2026-06-15T23:36:28.761Z\", \"assignerShortName\": \"Canon\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.