CVE-2026-12374
Improper XPC caller certificate validation and TOCTOU race condition in macOS PrivilegedHelperTool
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.
INFO
Published Date :
July 1, 2026, 3:16 p.m.
Last Modified :
July 2, 2026, 5:44 p.m.
Remotely Exploit :
No
Source :
2505284f-8ffb-486c-bf60-e19c1097a90b
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | 2505284f-8ffb-486c-bf60-e19c1097a90b | ||||
| CVSS 4.0 | MEDIUM | 2505284f-8ffb-486c-bf60-e19c1097a90b |
Solution
- Update Cato Client to version 5.13.1 or later.
- Apply vendor-provided patches for macOS.
- Ensure XPC service uses proper validation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-12374.
| URL | Resource |
|---|---|
| https://support.catonetworks.com/hc/en-us/articles/37284626576413-Security-Vulnerability-CVE-2026-12374-that-Impacts-macOS-Client-Versions-Lower-than-5-13-1 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-12374 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-12374
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-12374 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12374 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 01, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-12374', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-01T15:07:18.915117Z'} -
New CVE Received by 2505284f-8ffb-486c-bf60-e19c1097a90b
Jul. 01, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Cato Networks', 'modules': ['PrivilegedHelperTool'], 'product': 'SDP Client', 'versions': [{'status': 'affected', 'version': '5.12.0', 'lessThan': '5.13.1', 'versionType': 'semver'}], 'platforms': ['MacOS'], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 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 Added CWE CWE-295 Added CWE CWE-367 Added Reference https://support.catonetworks.com/hc/en-us/articles/37284626576413-Security-Vulnerability-CVE-2026-12374-that-Impacts-macOS-Client-Versions-Lower-than-5-13-1