CVE-2026-12374

MEDIUM

Improper XPC caller certificate validation and TOCTOU race condition in macOS PrivilegedHelperTool

Title source: cna

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.

References (1)

Core 1

Core References

https://support.catonetworks.com/hc/en-us/articles/37284626576413-Security-Vulnerability-CVE-2026-12374-that-Impacts-macOS-Client-Versions-Lower-than-5-13-1

Scores

CVSS v4 6.4

EPSS 0.0006

EPSS Percentile 0.0%

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-295 CWE-367

Status published

Products (1)

Cato Networks/SDP Client 5.12.0 - 5.13.1

Published Jul 01, 2026

Tracked Since Jul 01, 2026