9.9

CVE-2026-84869

Warnung
Medienbericht

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Connectwise ≫ Screenconnect Version < 26.6.5.9742
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11.09.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog

ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability

Schwachstelle

ConnectWise ScreenConnect contains both an improper privilege management and missing authorization vulnerability that may allow an attacker to file transfer and execution through an active remote sessions without authorization or host confirmation.

Beschreibung

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.

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.38% 0.316
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
7d616e1a-3288-43b1-a0dd-0a65d3e70a49 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-269 Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

CWE-862 Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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https://www.connectwise.com/company/trust/advisories
Vendor Advisory
https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenconnect-bulletin
Vendor Advisory
https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-84869
US Government Resource
https://www.huntress.com/blog/rogue-screenconnect-installations
Third Party Advisory