Medium severity · published Jul 1, 2026
CVE-2026-12374
Improper XPC caller certificate validation and TOCTOU race condition in macOS PrivilegedHelperTool
6.4
CVSS
0.1%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 0% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
SDP Client · Cato Networks
5.12.0 before 5.13.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12374
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12374
support.catonetworks.com
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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