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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Connectwise Screenconnect
cpe:2.3:a:connectwise:screenconnect:*:*:*:*:*:*:*:*
|
— |
26.6.5.9742
|
References 5
https://github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-84869
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https://www.connectwise.com/company/trust/advisories
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https://www.connectwise.com/company/trust/security-bulletins/2026-09-08-screenc…
7d616e1a-3288-43b1-a0dd-0a65d3e70a49
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026…
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https://www.huntress.com/blog/rogue-screenconnect-installations
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