CVE-2026-12374

6.4 mediumEPSS 0.07%

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.

CVSS 4.0: 6.4CVSS: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
EPSS: 0.07% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-25)
CWEs: CWE-295, CWE-367
Published: 2026-07-01
Modified: 2026-10-25
Record from: the NVD, synced 2026-10-25

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

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