Threat database

CVE-2026-19377 is a medium severity vulnerability in Cato Networks Cato Client for Windows involving improper certificate validation during the tunnel handshake. This flaw allows a man-in-the-middle attacker to impersonate a Cato Point of Presence (PoP) server and intercept or modify tunnel traffic. The vulnerability affects multiple versions prior to 6.12.6, 6.1.1, 5.8.1, 5.9, and 5.6.2. No patch or remediation information is provided in the available data.

Cato Windows SDP Client before version 6.12.6 contains an arbitrary file disclosure vulnerability. A low-privileged local user can cause the Windows service, running as Local System, to read and disclose arbitrary local files due to improper file path validation and missing TLS certificate enforcement.

Cato Networks SDP Client for Windows before 6.12.6 allows a local user to delete arbitrary files with SYSTEM privileges via improper validation of a client-supplied SID over a local IPC named pipe.

Improper certificate validation and a time-of-check time-of-use (TOCTOU) race condition in the PrivilegedHelperTool XPC service in Cato Client before v.5.13.1 on macOS allows a local authenticated attacker to escalate privileges to root via a self-signed certificate that bypasses the XPC caller verification and a symlink swap during package installation.

Cato Networks’ Socket versions prior to 25 contain a command injection vulnerability that allows an authenticated attacker with access to the Socket web interface (UI) to execute arbitrary operating system commands as the root user on the Socket’s internal system.

An issue in Cato Networks' CatoClient for Linux, before version 5.5, allows a local attacker to escalate privileges to root by exploiting improper symbolic link handling.