CVE-2026-84869

Analyzed
Published: 08 Sept 2026, 19:29
Last modified:11 Sept 2026, 19:58

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.9 CRITICAL
v3.1 (cve.org)
EPSS Score
0.38% LOW
0% probability 0.00%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 Sept 2026, 19:29
Published
Vulnerability first disclosed
11 Sept 2026, 00:00
Added to CISA KEV
ConnectWise ScreenConnect Improper Privilege Management and Missing Authorization Vulnerability
11 Sept 2026, 19:58
Last Modified
Vulnerability information updated
14 Sept 2026, 00:00
CISA Remediation Due
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.

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.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.38%• Percentile: 32%

Techniques & Countermeasures

  • CWE-862•Missing Authorization

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

  • 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.

Affected Systems

  • connectwise•screenconnect

    < 26.6.5.9742 | All versions prior to 26.6.5

References (5)