November 13, 2026

CVE Watchtower

CVE-2026-127063DataComm RMM+ All extension versions

NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.3)
Published Date
Nov 12, 2026
Last Modified
Nov 13, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.38%Probability
Root Weakness (CWE)
CWE-1392 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v4.0 Base Metrics — Score 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
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions
  • DataComm RMM+ All extension versions
Patched Versions
No patched version published yet
Until a fix ships, reduce exposure:
  • Restrict access to the affected service or interface to trusted networks.
  • Disable the affected feature if you do not need it.
  • Watch the vendor advisory for a firmware or software update.

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is critical.

  1. Check whether you run DataComm RMM+ All extension versions and which version.
  2. No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
  3. Subscribe to the vendor advisory so you learn when a fix ships.

Timeline

  • Nov 12, 2026Published
  • Nov 13, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 13, 2026 21:28 UTC