CVE-2025-40896 MEDIUM

CVE-2025-40896: Lack of TLS certificate validation when connecting Arc to a Guardian or CMC, in Arc before v2.2.0

Vendor Nozomi Networks
Product Arc
Weakness CWE-295
Published March 4, 2026
Last update March 4, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 4, 2026 CVE published
March 4, 2026 Record updated