CVE-2026-12374
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…
Does this matter?
Lower severity and a low EPSS score (0.07%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.4 MEDIUMCVSS: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/M
- EPSS
- 0.07% probability · 0th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-295, CWE-367
- Source
- 2505284f-8ffb-486c-bf60-e19c1097a90b
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.