How severe is CVE-2026-6066?

CVE-2026-6066 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-6066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6066?

CVE-2026-6066 affects Connectwise Automate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6066?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-6066 have an EU (EUVD) identifier?

Yes. CVE-2026-6066 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23875.

When was CVE-2026-6066 published?

CVE-2026-6066 was published on 2026-04-20 and last updated on 2026-06-17.

CVE-2026-6066

CVE-2026-6066 is a high-severity vulnerability in Connectwise Automate with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23875
Weakness: CWE-319
Affected product: Connectwise Automate
Published: 2026-04-20
Last modified: 2026-06-17

Description

ConnectWise has released a security update for ConnectWise Automate™ that addresses a behavior in the ConnectWise Automate Solution Center where certain client-to-server communications could occur without transport-layer encryption. This could allow network‑based interception of Solution Center traffic in Automate deployments. The issue has been resolved in Automate 2026.4 by enforcing secure communication for affected Solution Center connections.

Frequently asked questions

What is CVE-2026-6066?: ConnectWise has released a security update for ConnectWise Automate™ that addresses a behavior in the ConnectWise Automate Solution Center where certain client-to-server communications could occur without transport-layer encryption. This could allow network‑based interception of Solution Center traffic in Automate deployments. The issue has been resolved in Automate 2026.4 by enforcing secure communication for affected Solution Center connections.
How severe is CVE-2026-6066?: CVE-2026-6066 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-6066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6066?: CVE-2026-6066 affects Connectwise Automate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6066?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6066 have an EU (EUVD) identifier?: Yes. CVE-2026-6066 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23875.
When was CVE-2026-6066 published?: CVE-2026-6066 was published on 2026-04-20 and last updated on 2026-06-17.

References

https://www.connectwise.com/company/trust/security-bulletins/2026-04-20-connectwise-automate-bulletin

Affected products (1)

cpe:2.3:a:connectwise:automate:*:*:*:*:*:*:*:*

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