CVE-2026-24070
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
3Description
During the installation of the Native Access application, a privileged helper `com.native-instruments.NativeAccess.Helper2`, which is used by Native Access to trigger functions via XPC communication like copy-file, remove or set-permissions, is deployed as well. The communication with the XPC service of the privileged helper is only allowed if the client process is signed with the corresponding certificate and fulfills the following code signing requirement: "anchor trusted and certificate leaf[subject.CN] = \"Developer ID Application: Native Instruments GmbH (83K5EG6Z9V)\"" The Native Access application was found to be signed with the `com.apple.security.cs.allow-dyld-environment-variables` and `com.apple.security.cs.disable-library-validation` entitlements leading to DYLIB injection and therefore command execution in the context of this application. A low privileged user can exploit the DYLIB injection to trigger functions of the privileged helper XPC service resulting in privilege escalation by first deleting the /etc/sudoers file and then copying a malicious version of that file to /etc/sudoers.
Analysis
Native Access on macOS allows local authenticated attackers to inject malicious libraries into the privileged XPC helper process due to overly permissive code signing entitlements, enabling arbitrary code execution with system-level privileges. The vulnerability stems from the application being signed with dyld environment variable and library validation bypass entitlements while communicating with a trusted helper that validates only the signing certificate. …
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Remediation
Within 24 hours: Inventory all systems with Native Access installed and isolate high-risk machines from production networks if possible; notify affected users to avoid using the application pending remediation. Within 7 days: Contact Native Instruments for patch availability timeline and evaluate whether Native Access can be replaced with alternative solutions; implement network monitoring for suspicious XPC activity. …
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