CVE-2026-12374

MEDIUM
MEDIUM Priority: 0.00 BB Relevance: 38/100
Published: 2026-07-01 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: X
AT: Present
VC: High
VI: High
VA: High

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.

Weakness Classification (2)

Bug Bounty Relevance

38 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

6.4 / 10.0 v4.0
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:L/U:Amber

EPSS — Exploitation Probability

0.07%
Raw Score 0.000730
Percentile 0.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00073
2026-10-28
0.00073

Intelligence Sources

nvd ref →