CVE-2026-12374

MediumCVSS 6.4/10Last modified Oct 25, 2026

Description

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.

Metrics

CVSS 4.0 6.4/10

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:L/U:Amber

Weakness enumeration

CWE-295 CWE-367

Affected software

No affected versions have been published.

Timeline

Published: Jul 1, 2026
Last modified: Oct 25, 2026
NVD status: Deferred

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