CVE-2026-84869

CriticalActively exploited (CISA KEV)

Description

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.

SeverityCritical
CVSS9.9
Exploit probability—
ProductConnectWise ScreenConnect
PublishedSep 8, 2026
First seenSep 8, 2026
Added to KEVSep 11, 2026

How to fix

CISA required action

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.

CISA due date: Sep 14, 2026
Update
  • connectwise screenconnect26.6.5.9742 or later

Affected products

ProductAffected versionsFixed in
connectwise screenconnectv < 26.6.5.974226.6.5.9742

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

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