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

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Summary

CVECVE-2026-12374
StatePUBLISHED
AssignerCato
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-01 15:16:27 UTC
Updated2026-07-01 16:16:31 UTC
DescriptionImproper 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.

Risk And Classification

Primary CVSS: v4.0 6.4 MEDIUM from 2505284f-8ffb-486c-bf60-e19c1097a90b

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

Problem Types: CWE-295 | CWE-367 | CWE-295 CWE-295 Improper certificate validation | CWE-367 CWE-367 Time-of-check time-of-use (TOCTOU) race condition

VersionSourceTypeScoreSeverityVector
4.02505284f-8ffb-486c-bf60-e19c1097a90bSecondary6.4MEDIUMCVSS: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/C...
4.0CNACVSS6.4MEDIUMCVSS: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/A...

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cato Networks SDP Client affected 5.12.0 5.13.1 semver MacOS

References

ReferenceSourceLinkTags
support.catonetworks.com/hc/en-us/articles/37284626576413-Security-Vulnerability-CVE-2... 2505284f-8ffb-486c-bf60-e19c1097a90b support.catonetworks.com
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