Time-of-check Time-of-use (TOCTOU) Race Condition in Cato Client for macOS - CVE-2025-3886
Published: April 24, 2025
Vulnerability identifier: #VU107914
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-3886
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to compromise the target system.
The vulnerability exists due to a time-of-check time-of-use (TOCTOU) race condition within the Helper service. A local user can execute arbitrary coee on the system with elevated privileges.
Affected software
Cato Client for macOS
How to mitigate CVE-2025-3886
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.