How severe is CVE-2026-9089?

CVE-2026-9089 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-9089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9089?

CVE-2026-9089 affects Connectwise Automate. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-9089?

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-2026-9089 have an EU (EUVD) identifier?

Yes. CVE-2026-9089 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31290.

When was CVE-2026-9089 published?

CVE-2026-9089 was published on 2026-05-21 and last updated on 2026-06-17.

CVE-2026-9089

CVE-2026-9089 is a high-severity vulnerability in Connectwise Automate with a CVSS 3.x base score of 8.8. 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-494.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31290
Weakness: CWE-494
Affected product: Connectwise Automate
Published: 2026-05-21
Last modified: 2026-06-17

Description

The ConnectWise Automate™ Agent does not fully verify the authenticity of components obtained during plugin loading and self-update operations. This issue is addressed in Automate 2026.5.

Frequently asked questions

What is CVE-2026-9089?: The ConnectWise Automate™ Agent does not fully verify the authenticity of components obtained during plugin loading and self-update operations. This issue is addressed in Automate 2026.5.
How severe is CVE-2026-9089?: CVE-2026-9089 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-9089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9089?: CVE-2026-9089 affects Connectwise Automate. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-9089?: 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-2026-9089 have an EU (EUVD) identifier?: Yes. CVE-2026-9089 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31290.
When was CVE-2026-9089 published?: CVE-2026-9089 was published on 2026-05-21 and last updated on 2026-06-17.

References

https://www.connectwise.com/company/trust/security-bulletins/2026-05-21-connectwise-automate-bulletin

Affected products (1)

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

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