Vulnerability · Published Jul 1, 2026 · Assigned by Cato

CVE-2026-12374Improper XPC caller certificate validation and TOCTOU race condition in macOS PrivilegedHelperTool

Medium 6.4

In plain English

A medium-severity improper certificate validation in SDP Client from Cato Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities).

Severity (CVSS 4.0)6.4Medium

Exploit odds (30 days)<0.1%top 99.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Cato Networks	SDP Client	5.12.0 – before 5.13.1

Weakness: CWE-295, CWE-367 · 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

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