Vulnerability in Nozomi Networks Arc

CVE-2025-40896

The server certificate was not verified when an Arc agent connected to a Guardian or CMC. A malicious actor could perform a man-in-the-middle attack and intercept the communication between the Arc agent and the Guardian or CMC. This could result in theft of the client token and sensitive information (such as assets and alerts), impersonation of the server, or injection of spoofed data (such as false asset information or vulnerabilities) into the Guardian or CMC.

Vulnerability class: Improper Certificate Validation

EPSS: 0.001 (1.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-40896?
CVE-2025-40896 is a medium-severity vulnerability in Nozomi Networks Arc, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2026-03-04.
How severe is CVE-2025-40896?
Medium severity. CVSS v3 base score is 6.5 out of 10.