CVE-2026-12374

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

Published Jul 1, 2026 CVSS 4.0 · 6.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Catonetworks
Catonetworks sdp Client
Vendors & Products Catonetworks
Catonetworks sdp Client
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Improper XPC caller certificate validation and TOCTOU race condition in macOS PrivilegedHelperTool
Weaknesses CWE-295
CWE-367
References
Metrics cvssV4_0

{'score': 6.4, 'vector': '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/AU:Y/R:U/V:C/RE:L/U:Amber'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Cato
Published
Updated
Jul 1, 2026, 3:07 PM
Reserved
Jun 16, 2026, 7:28 AM
Status
Deferred
Published
Jul 1, 2026, 3:16 PM
Modified
Oct 25, 2026, 5:10 PM