CVE-2026-127063
CVE-2026-127063
The third-party RMM+ extension for ConnectWise ScreenConnect uses a static API secret by default. The value can be changed by an administrator; however, environments retaining the default value may allow unauthorized access to extension API functionality, including the ability to send commands to managed agents. This issue is specific to the third-party extension and does not affect the ScreenConnect server or client. Scope: This issue affects the third-party RMM+ extension for ConnectWise ScreenConnect. Deployments without the extension are not affected. ScreenConnect server or client software are not impacted.
Fixes and workarounds
Fix
Cloud: No action required. ConnectWise disabled and removed the affected third-party RMM+ extensions from cloud-hosted ScreenConnect environments. On-Premise: * Disable the RMM+ extension immediately and verify that it remains disabled. * Do not re-enable or reinstall it pending further guidance.
Source: CNA: ConnectWiseAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| RMM+ DataComm |
All extension versions (affected)
Other versions: unaffected |
CNA: ConnectWise |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.3 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | CNA: ConnectWise |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
For agents and automation
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Endpoints and access details
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