Vulnerability-Lookup

CVE-2026-84869 (GCVE-0-2026-84869)

Vulnerability from cvelistv5 – Published: 2026-09-08 19:29 – Updated: 2026-09-09 20:51

Previdian

Title

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

Summary

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.

Severity

9.9 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-09 20:44 UTC

CWE

CWE-862 - Missing Authorization
CWE-269 - Improper Privilege Management

Assigner

ConnectWise mitre root

References

3 references

URL	Tags
https://www.connectwise.com/company/trust/securit…
https://github.com/ConnectWise-Advisories/Disclos…
https://www.connectwise.com/company/trust/advisories

Impacted products

1 product

Vendor	Product	Version	CPE status
ConnectWise	ScreenConnect	Affected: All versions prior to 26.6.5	guessed

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 09cbf843-f0e1-4023-96b8-e9f2e8ab521a

Vulnerability ID: CVE-2026-84869

Status: Confirmed

Status Updated: 2026-09-09 07:51 UTC

Exploited: Yes

Timestamps

First Seen: 2026-09-09

Asserted: 2026-09-09

Scope

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details

Feed	Previdian (previdian.com)
Title	ScreenConnect Client: Guest-to-Host File Execution via File-Transfer Actions
Vendor	ConnectWise
Product	ScreenConnect
Added Date	2026-09-09T07:51:00.000Z
Cvss Score	9.9
Epss Score	0.00382
Cvss Severity	CRITICAL
Epss Percentile	0.31599
Used In Malware	unknown
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-09-10 08:00 UTC | Updated: 2026-09-10 08:00 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-84869

Vulnerability from fkie_nvd - Published: 2026-09-08 20:18 - Updated: 2026-09-09 21:17

Previdian

Severity

9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	7d616e1a-3288-43b1-a0dd-0a65d3e70a49	https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
	7d616e1a-3288-43b1-a0dd-0a65d3e70a49	https://www.connectwise.com/company/trust/advisories
	7d616e1a-3288-43b1-a0dd-0a65d3e70a49	https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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    {
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  "lastModified": "2026-09-09T21:17:05.343",
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
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        "impactScore": 6.0,
        "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
        "type": "Secondary"
      }
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  },
  "published": "2026-09-08T20:18:51.147",
  "references": [
    {
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "url": "https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869"
    },
    {
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "url": "https://www.connectwise.com/company/trust/advisories"
    },
    {
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin"
    }
  ],
  "sourceIdentifier": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "type": "Secondary"
    }
  ]
}

GHSA-RC8V-F46M-JCGM

Vulnerability from github – Published: 2026-09-08 21:34 – Updated: 2026-09-08 21:34

Details

Severity

9.9 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-84869"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-08T20:18:51Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-rc8v-f46m-jcgm",
  "modified": "2026-09-08T21:34:29Z",
  "published": "2026-09-08T21:34:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84869"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869"
    },
    {
      "type": "WEB",
      "url": "https://www.connectwise.com/company/trust/advisories"
    },
    {
      "type": "WEB",
      "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-3256

Vulnerability from csaf_certbund - Published: 2026-09-08 22:00 - Updated: 2026-09-09 22:00

Summary

ConnectWise ScreenConnect: Schwachstelle ermöglicht Codeausführung

Severity

Hoch

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: ConnectWise ScreenConnect ist eine Softwarelösung für Fernzugriff, Fernsupport und Fernwartung von Computern, Servern, virtuellen Maschinen und mobilen Geräten.

Angriff: Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in ConnectWise ScreenConnect ausnutzen, um Code auszuführen.

Betroffene Betriebssysteme: - Linux - Sonstiges - UNIX - Windows

CVE-2026-84869

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
ConnectWise ScreenConnect ConnectWise / ScreenConnect	`cpe:/a:connectwise:screenconnect:-`	—
ConnectWise ScreenConnect <26.6.5 ConnectWise / ScreenConnect		<26.6.5

References

4 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://www.connectwise.com/company/trust/advisor…	external
https://www.connectwise.com/company/trust/securit…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "ConnectWise ScreenConnect ist eine Softwarel\u00f6sung f\u00fcr Fernzugriff, Fernsupport und Fernwartung von Computern, Servern, virtuellen Maschinen und mobilen Ger\u00e4ten.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in ConnectWise ScreenConnect ausnutzen, um Code auszuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- Sonstiges\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-3256 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3256.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-3256 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3256"
      },
      {
        "category": "external",
        "summary": "Connectwise Advisory vom 2026-09-08",
        "url": "https://www.connectwise.com/company/trust/advisories#:~:text=September%203%2C%202026%3A"
      },
      {
        "category": "external",
        "summary": "Connectwise Security Bulletin vom 2026-09-09",
        "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin"
      }
    ],
    "source_lang": "en-US",
    "title": "ConnectWise ScreenConnect: Schwachstelle erm\u00f6glicht Codeausf\u00fchrung",
    "tracking": {
      "current_release_date": "2026-09-09T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-10T05:46:34.207+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-3256",
      "initial_release_date": "2026-09-08T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-09-08T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-09-09T22:00:00.000+00:00",
          "number": "2",
          "summary": "Meldung aufgrund neuer Informationen angepasst"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "ConnectWise ScreenConnect",
                "product": {
                  "name": "ConnectWise ScreenConnect",
                  "product_id": "1601441",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:connectwise:screenconnect:-"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c26.6.5",
                "product": {
                  "name": "ConnectWise ScreenConnect \u003c26.6.5",
                  "product_id": "T059297"
                }
              },
              {
                "category": "product_version",
                "name": "26.6.5",
                "product": {
                  "name": "ConnectWise ScreenConnect 26.6.5",
                  "product_id": "T059297-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:connectwise:screenconnect:26.6.5"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "ScreenConnect"
          }
        ],
        "category": "vendor",
        "name": "ConnectWise"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-84869",
      "product_status": {
        "known_affected": [
          "1601441",
          "T059297"
        ]
      },
      "release_date": "2026-09-08T22:00:00.000+00:00",
      "title": "CVE-2026-84869"
    }
  ]
}

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-2026-84869 (GCVE-0-2026-84869)

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: previdian

Details

References

FKIE_CVE-2026-84869

GHSA-RC8V-F46M-JCGM

WID-SEC-W-2026-3256

Tags

Sightings

Nomenclature