CVE-2026-84869: CWE-862 Missing Authorization in ConnectWise ScreenConnect
CVE-2026-84869 is a critical vulnerability in the ConnectWise ScreenConnect client that allows unauthorized file transfer and execution during an active remote session without host confirmation under certain conditions. The vulnerability does not affect ScreenConnect servers. It has a very high CVSS score of 9.9, indicating severe impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
This vulnerability (CWE-862 Missing Authorization) exists in the ScreenConnect client component of ConnectWise's remote access software. It permits an attacker with limited privileges to transfer and execute files remotely without explicit authorization or host confirmation during an active session. The flaw does not impact the server component of ScreenConnect. The CVSS 3.1 vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and complete compromise of confidentiality, integrity, and availability.
Potential Impact
Successful exploitation could lead to full compromise of the affected client system, including unauthorized file execution and potential system takeover. Confidentiality, integrity, and availability of the client system are all critically impacted. The server component is not affected, limiting the scope to client-side risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor ConnectWise advisories for updates and consider restricting client access or session permissions until a fix is available.
CVE-2026-84869: CWE-862 Missing Authorization in ConnectWise ScreenConnect
Description
CVE-2026-84869 is a critical vulnerability in the ConnectWise ScreenConnect client that allows unauthorized file transfer and execution during an active remote session without host confirmation under certain conditions. The vulnerability does not affect ScreenConnect servers. It has a very high CVSS score of 9.9, indicating severe impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 9.9critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-862 Missing Authorization) exists in the ScreenConnect client component of ConnectWise's remote access software. It permits an attacker with limited privileges to transfer and execute files remotely without explicit authorization or host confirmation during an active session. The flaw does not impact the server component of ScreenConnect. The CVSS 3.1 vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and complete compromise of confidentiality, integrity, and availability.
Potential Impact
Successful exploitation could lead to full compromise of the affected client system, including unauthorized file execution and potential system takeover. Confidentiality, integrity, and availability of the client system are all critically impacted. The server component is not affected, limiting the scope to client-side risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor ConnectWise advisories for updates and consider restricting client access or session permissions until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ConnectWise
- Date Reserved
- 2026-09-02T13:57:51.898Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa0640aacd9273b4920a47f
Added to database: 09/08/2026, 19:37:46 UTC
Last enriched: 09/08/2026, 19:52:08 UTC
Last updated: 09/08/2026, 20:30:03 UTC
Views: 6
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