CVE-2026-6066Network attack vector

Sensitive traffic interception via missing transport encryption

Published Apr 20, 2026 · Updated Apr 20, 2026

Cleartext transmission in ConnectWise Automate Solution Center before 2026.4 allows remote authenticated users to intercept traffic. Affected Solution Center client-to-server connections use port 8484 without transport-layer encryption instead of requiring HTTPS. Reachability is limited to on-premises deployments and requires low-privileged access; interception exposes traffic and permits limited modification without interrupting service.

CVSS severity7.1
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cleartext transmission in ConnectWise Automate Solution Center before 2026.4 allows remote authenticated users to intercept traffic. Affected Solution Center client-to-server connections use port 8484 without transport-layer encryption instead of requiring HTTPS. Reachability is limited to on-premises deployments and requires low-privileged access; interception exposes traffic and permits limited modification without interrupting service.

The record

CVE
CVE-2026-6066
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
ConnectWise
Product
ConnectWise Automate
Classifications
CWE-319, T1040
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions prior to 2026.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ConnectWise · ConnectWise Automateversion=All versions prior to 2026.4

Published CVSS scores

7.1ConnectWiseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo