ConnectWise ScreenConnect Client privileges management

Summaryinfo

A vulnerability categorized as critical has been discovered in ConnectWise ScreenConnect. This issue affects some unknown processing of the component Client. The manipulation results in privileges management. This vulnerability was named CVE-2026-84869. The attack may be performed from remote. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in ConnectWise ScreenConnect (affected version unknown). Affected is an unknown functionality of the component Client. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at connectwise.com. This vulnerability is traded as CVE-2026-84869 since 09/02/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are unknown but an exploit is available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/16/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 344805 (ConnectWise ScreenConnect < 26.6.5 Missing Authorization), which helps to determine the existence of the flaw in a target environment. This issue was added on 09/11/2026 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/14/2026:

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 BO

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (344805) and EUVD (EUVD-2026-74053). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Network Management Software

Vendor

• ConnectWise

Name

• ScreenConnect

CPE 2.3info

• 🔒

CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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