{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-9636",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T15:54:57.625184Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-14T15:55:05.004Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "ControlLogix\u00ae 5580, CompactLogix\u00ae 5380, GuardLogix\u00ae 5580, Compact GuardLogix\u00ae 5380, 1756-EN4TR",
          "vendor": "Rockwell Automation",
          "versions": [
            {
              "status": "affected",
              "version": "Version 36 - Version 37"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A security issue exists within CompactLogix\u00ae 5380, ControlLogix\u00ae 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections."
            }
          ],
          "value": "A security issue exists within CompactLogix\u00ae 5380, ControlLogix\u00ae 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/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"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-299",
              "description": "CWE-299 Improper check for certificate revocation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-14T15:11:42.995Z",
        "orgId": "b73dd486-f505-4403-b634-40b078b177f0",
        "shortName": "Rockwell"
      },
      "references": [
        {
          "url": "https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1788.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Upgrade to firmware version 38.011 or later.\u003cbr\u003e\u003cbr\u003eFor\u0026nbsp;1756-EN4TR upgrade to version 8.001 or later."
            }
          ],
          "value": "Upgrade to firmware version 38.011 or later.\n\nFor\u00a01756-EN4TR upgrade to version 8.001 or later."
        }
      ],
      "source": {
        "advisory": "SD1788",
        "discovery": "INTERNAL"
      },
      "title": "Rockwell Automation CompactLogix\u00ae 5380 ControlLogix\u00ae 5580 / 1756-EN4 Communications Module \u2013 Certificate Revocation List Vulnerability",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b73dd486-f505-4403-b634-40b078b177f0",
    "assignerShortName": "Rockwell",
    "cveId": "CVE-2026-9636",
    "datePublished": "2026-07-14T15:11:42.995Z",
    "dateReserved": "2026-05-26T18:10:55.329Z",
    "dateUpdated": "2026-07-14T15:55:05.004Z",
    "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-2026-9636\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-14T15:54:57.625184Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-14T15:55:00.563Z\"}}], \"cna\": {\"title\": \"Rockwell Automation CompactLogix\\u00ae 5380 ControlLogix\\u00ae 5580 / 1756-EN4 Communications Module \\u2013 Certificate Revocation List Vulnerability\", \"source\": {\"advisory\": \"SD1788\", \"discovery\": \"INTERNAL\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.2, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Rockwell Automation\", \"product\": \"ControlLogix\\u00ae 5580, CompactLogix\\u00ae 5380, GuardLogix\\u00ae 5580, Compact GuardLogix\\u00ae 5380, 1756-EN4TR\", \"versions\": [{\"status\": \"affected\", \"version\": \"Version 36 - Version 37\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to firmware version 38.011 or later.\\n\\nFor\\u00a01756-EN4TR upgrade to version 8.001 or later.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Upgrade to firmware version 38.011 or later.\u003cbr\u003e\u003cbr\u003eFor\u0026nbsp;1756-EN4TR upgrade to version 8.001 or later.\", \"base64\": false}]}], \"references\": [{\"url\": \"https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1788.html\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.2\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A security issue exists within CompactLogix\\u00ae 5380, ControlLogix\\u00ae 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"A security issue exists within CompactLogix\\u00ae 5380, ControlLogix\\u00ae 5580, and EN4 communication modules related to CIP Security certificate revocation handling. The security issue stems from the controller failing to properly reject certificates signed by an intermediate certificate that has been revoked via a Certificate Revocation List (CRL). This could allow a network-based attacker to establish a connection using a certificate that should be untrusted, potentially bypassing CIP Security protections.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-299\", \"description\": \"CWE-299 Improper check for certificate revocation\"}]}], \"providerMetadata\": {\"orgId\": \"b73dd486-f505-4403-b634-40b078b177f0\", \"shortName\": \"Rockwell\", \"dateUpdated\": \"2026-07-14T15:11:42.995Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-9636\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-14T15:55:05.004Z\", \"dateReserved\": \"2026-05-26T18:10:55.329Z\", \"assignerOrgId\": \"b73dd486-f505-4403-b634-40b078b177f0\", \"datePublished\": \"2026-07-14T15:11:42.995Z\", \"assignerShortName\": \"Rockwell\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}