What is CVE-2026-9089?

CVE-2026-9089 is a high-severity vulnerability in Connectwise Automate, classified under Download of Code Without Integrity Check. CVSS score: 8.8/10. Published 2026-05-21.

How severe is CVE-2026-9089?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Connectwise Automate

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.

Published 2026-05-21 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001

Affected products

Connectwise Automate — versions All versions prior to 2026.5

Weakness classification (CWE)

CWE-494 — Download of Code Without Integrity Check

References

7d616e1a-3288-43b1-a0dd-0a65d3e70a49 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-9089?: CVE-2026-9089 is a high-severity vulnerability in Connectwise Automate, classified under Download of Code Without Integrity Check. CVSS score: 8.8/10. Published 2026-05-21.
How severe is CVE-2026-9089?: High severity. CVSS v3 base score is 8.8 out of 10.