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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-12374 Detail

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

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Cato
CVSS-BT 6.4 MEDIUM
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

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-295 Improper Certificate Validation Cato  
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition Cato  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-12374
NVD Published Date:
07/01/2026
NVD Last Modified:
07/01/2026
Source:
Cato