A newly disclosed macOS security issue has raised concerns for organisations that rely on endpoint protection and device-management software to keep company Macs secure. According to a security advisory, the flaw could allow someone with access to a standard, non-admin user account to interfere with certain enterprise security tools, including CrowdStrike Falcon Sensor and Kandji Agent.
The issue is significant because endpoint security products are often one of the last safeguards available once an attacker gets onto a device. If those tools are disabled, it can become much harder for IT and security teams to spot suspicious activity, investigate incidents, or prevent further movement across the network.
The Problem Is Linked to How Trusted macOS Apps Communicate
Many macOS applications use privileged helper services to perform tasks that require higher system permissions. These helpers commonly communicate with the main application through Apple's XPC framework, which is designed to allow processes to interact securely.
The reported weakness involves how trust can remain associated with a signed application after it has been launched. Researchers found that this behaviour could potentially be abused to make malicious code appear as though it is coming from a trusted application component.
From there, an attacker may be able to call sensitive helper functions that should normally be tightly protected, including functions capable of stopping applications or disabling system extensions. In affected scenarios, this could undermine tamper-protection controls built into enterprise security software.
Why Standard User Access Is Still a Serious Concern
The technique does require an attacker to first gain access to a normal user account on the target Mac. That requirement limits who can use it, but it does not make the risk minor.
Many cyberattacks begin with lower-level access, such as a compromised employee password, malicious download, phishing incident, or unauthorised remote session. Once inside, attackers often try to weaken monitoring tools before attempting more serious actions.
This flaw could make that stage easier by allowing a non-administrative user to disrupt security monitoring without first obtaining full administrator privileges.
CrowdStrike and Kandji Were Among the Products Tested
The advisory says researchers demonstrated the technique against several enterprise security products on macOS.
In the CrowdStrike Falcon Sensor case, the researchers reportedly showed that a standard user account could unload the sensor through an exposed communication interface. This would remove important visibility such as threat detection, process monitoring, and network telemetry.
Kandji's device-management agent was also affected. Researchers found that an unprivileged user could impersonate a trusted application context and permanently deactivate the agent, including the related Endpoint Security Framework extension. That could result in the loss of security telemetry from the affected device.
The advisory also noted that a third unnamed endpoint security vendor was affected during testing, suggesting that the issue may be broader than the products publicly named.
Kandji Has Assigned a CVE and Vendors Have Issued Fixes
Kandji has addressed its reported issue and assigned it CVE-2026-39118, with a High severity rating of 8.4 out of 10 under CVSS v3.1.
CrowdStrike has also released a patch and introduced additional detection and prevention measures for supported macOS sensor versions, according to the advisory.
This highlights the importance of keeping both macOS and third-party security software updated. Endpoint tools are not static products; they require regular updates because new bypass techniques, software interactions, and platform-level issues continue to emerge.
What Organisations Should Do Now
For businesses managing Macs, the immediate priority is to confirm that macOS, CrowdStrike Falcon, Kandji, and other endpoint-management tools are running supported and fully patched versions.
Other practical steps include:
• Limit local user privileges wherever possible, especially on corporate-managed devices.
• Review vendor security advisories and apply all recommended patches promptly.
• Monitor unusual endpoint-agent stoppages, unexpected security-service failures, or missing device telemetry.
• Treat trusted application-to-helper communication channels as a security area that requires monitoring and proper access controls.
Final Thoughts
This macOS issue is a reminder that standard user accounts should not automatically be seen as harmless. In a well-planned attack, even limited access can become more valuable if it allows an intruder to disable the very tools meant to detect them.
For organisations using CrowdStrike, Kandji, or similar endpoint platforms, keeping agents updated and monitoring their health status should be treated as an urgent operational priority.
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