CVE-2026-127063
Summary
| CVE | CVE-2026-127063 |
|---|---|
| State | PUBLISHED |
| Assigner | ConnectWise |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-11-12 18:17:39 UTC |
| Updated | 2026-11-12 20:04:52 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v4.0 9.3 CRITICAL from 7d616e1a-3288-43b1-a0dd-0a65d3e70a49
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Problem Types: CWE-1392 | CWE-1392 CWE-1392 Use of default credentials
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 | Secondary | 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/E:X/C... |
| 4.0 | CNA | CVSS | 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 |
CVSS v4.0 Breakdown
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/ConnectWise-Advisories/Disclosures/tree/main/CVE-2026-127063 | 7d616e1a-3288-43b1-a0dd-0a65d3e70a49 | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: 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.