ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.00924,
  "percentile": 0.60908
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.00924,
  "percentile": 0.60731
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.00924,
  "percentile": 0.60682
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.00924,
  "percentile": 0.60666
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.00924,
  "percentile": 0.60647
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.00924,
  "percentile": 0.60589
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.00924,
  "percentile": 0.60561
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.00924,
  "percentile": 0.60535
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.00924,
  "percentile": 0.60472
}

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.00924,
  "percentile": 0.60428
}

Stored CNA snapshot at this observation.

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-84869",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-09-11",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-12T03:55:19.450Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "third-party-advisory"
            ],
            "url": "https://www.huntress.com/blog/rogue-screenconnect-installations"
          },
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-09-11T00:00:00.000Z",
            "value": "CVE-2026-84869 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "ScreenConnect",
          "vendor": "ConnectWise",
          "versions": [
            {
              "status": "affected",
              "version": "All versions prior to 26.6.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circumstances. ScreenConnect servers are not impacted."
            }
          ],
          "value": "A condition in the ScreenConnect client may allow files to be transferred and executed through an active remote session without authorization or Host confirmation in certain circumstances. ScreenConnect servers are not impacted."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-1",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269 Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-08T19:29:33.630Z",
        "orgId": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
        "shortName": "ConnectWise"
      },
      "references": [
        {
          "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin"
        },
        {
          "url": "https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869"
        },
        {
          "url": "https://www.connectwise.com/company/trust/advisories"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "<p><b>Cloud:&nbsp;</b><span>Updated to the latest release. We recommend that\npartners </span><a href=\"https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_client/Reinstall_the_host_client\">reinstall their host clients</a><span> and </span><a href=\"https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_page/Reinstall_and_upgrade_an_access_agent\">update their access agents</a><span>.</span></p><p><b>On-prem</b>:&nbsp;<span>Upgrade to ScreenConnect client version </span><span>26.6.5 </span><span>or later.</span></p><p><b>Automate-integrated ScreenConnect deployments:&nbsp;</b><span>Automate partners are eligible to update their integrated\non-premises ScreenConnect installation as long as their Automate Assurance\nsubscription is active. Automate partners should apply the ScreenConnect </span><span>26.6.5 </span><span>update through Automate\nProduct Updates.</span></p>"
            }
          ],
          "value": "Cloud: Updated to the latest release. We recommend that\npartners  reinstall their host clients https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_client/Reinstall_the_host_client  and  update their access agents https://docs.connectwise.com/ScreenConnect_Documentation/Get_started/Host_page/Reinstall_and_upgrade_an_access_agent .\n\n\n\nOn-prem: Upgrade to ScreenConnect client version 26.6.5 or later.\n\n\n\nAutomate-integrated ScreenConnect deployments: Automate partners are eligible to update their integrated\non-premises ScreenConnect installation as long as their Automate Assurance\nsubscription is active. Automate partners should apply the ScreenConnect 26.6.5 update through Automate\nProduct Updates."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "<p>If you are\nunable to apply the update immediately due to maintenance windows or\nchange-freeze policies, you can implement the following as a temporary\nmitigation to help reduce exposure until the update can be applied. <b>This is\nnot a substitute for installing the security update</b>.</p>\n\n<p></p><ol><li>Navigate to the <b>Administration &gt; Security &gt; Roles</b> section. </li><li>Edit\na role, review each session group that has permissions assigned to it, and\ndeselect the <b>TransferFiles</b> permission if it is selected.</li><li>Save\nyour changes. Repeat for each role.</li></ol><p></p>"
            }
          ],
          "value": "If you are\nunable to apply the update immediately due to maintenance windows or\nchange-freeze policies, you can implement the following as a temporary\nmitigation to help reduce exposure until the update can be applied. This is\nnot a substitute for installing the security update.\n\n\n\n\n\n\n\n  *  Navigate to the Administration > Security > Roles section. \n  *  Edit\na role, review each session group that has permissions assigned to it, and\ndeselect the TransferFiles permission if it is selected.\n  *  Save\nyour changes. Repeat for each role."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
    "assignerShortName": "ConnectWise",
    "cveId": "CVE-2026-84869",
    "datePublished": "2026-09-08T19:29:33.630Z",
    "dateReserved": "2026-09-02T13:57:51.898Z",
    "dateUpdated": "2026-09-12T03:55:19.450Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2026-84869",
  "cwes": [
    "CWE-269",
    "CWE-862"
  ],
  "dateAdded": "2026-09-11",
  "dueDate": "2026-09-14",
  "forensicTriage": "Yes",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-84869",
  "product": "ScreenConnect",
  "requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
  "shortDescription": "ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability that may allow an attacker to transfer and execute files through an active remote session without authorization or host confirmation.",
  "vendorProject": "ConnectWise",
  "vulnerabilityName": "ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability"
}