CVE-2023-43976: Catonetworks Cato Client

High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days.

An issue in CatoNetworks CatoClient before v.5.4.0 allows attackers to escalate privileges and winning the race condition (TOCTOU) via the PrivilegedHelperTool component.

Affected products

• Catonetworks Cato Client: before 5.4.0 (fixed in 5.4.0)

Published 2023-10-03. Last modified 2026-06-17.