CVE-2026-24070

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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:\n\"anchor trusted and certificate leaf[subject.CN] = \\\"Developer ID Application: Native Instruments GmbH (83K5EG6Z9V)\\\"\"\n\nThe 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. 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{}

{"analysis": {"en": {"generated_at": "2026-04-18T00:39:31.689756+00:00", "value": {"mitigation_remediation": ["Contact Native Instruments immediately to request an update or patch that removes the insecure DYLD and library validation entitlements, and hold off on installing or updating Native Access until the patch is available.", "If you cannot obtain a patch, uninstall Native Access and any associated privileged helper binaries, and disable or delete the launchd service that runs the helper to prevent accidental execution.", "Set up monitoring on the system to detect unauthorized modifications to /etc/sudoers or the presence of unexpected DYLD environment variable settings, and restore the file from a known\u2011good backup if tampered.", "Consider using macOS security features such as System Integrity Protection and the restrictive app sandbox to reduce the risk of DYLD injection if the application must remain installed."], "summary": {"action": "Request Patch", "impact": "Local Privilege Escalation"}, "threat_synthesis": {"affected_systems": "Native Instruments Native Access running on macOS is affected. All versions installed on Apple macOS environments share the same code\u2011signing and entitlement configuration, and no specific version numbers are listed in the current advisory. Users of Native Access on macOS devices should assume the vulnerability applies until a vendor\u2011provided fix is issued.", "description_and_impact": "During installation of Native Access on macOS, the installer deploys a privileged helper that communicates with the main application over XPC. The helper is protected by a strict code\u2011signing requirement that only allows a signed client with the specific certificate to reach it. Native Access itself is signed with permits\u2011dyld\u2011environment\u2011variables and disable\u2011library\u2011validation entitlements, which give an attacker the ability to inject a dynamic library into the process. A local user can then invoke functions of the privileged helper such as copy\u2011file or set\u2011permissions to delete the system /etc/sudoers file and replace it with a malicious copy, effectively granting root privileges. The vulnerability is a classic example of untrusted search path exploitation (CWE\u2011426) and leads to privilege escalation, compromising confidentiality, integrity and availability of the system.", "risk_and_exploitability": "The CVSS base score of 8.8 indicates a high severity for local privilege escalation. However, the EPSS score of less than 1 percent suggests a very low current exploitation probability, and the vulnerability has not yet been recorded in the CISA Known Exploited Vulnerabilities catalog. The attack requires a local user account and the ability to run Native Access; the exploit path involves manipulating DYLD environment variables to inject a library that triggers privileged helper actions. Because the vulnerable component is a helper service with elevated privileges, a successful exploitation would allow attackers to modify system files such as /etc/sudoers, resulting in full root access."}}}}, "created": "2026-02-04T12:44:36.013813+00:00", "updated": "2026-04-18T00:45:32.241143+00:00", "vendors": ["native_instruments", "native_instruments$PRODUCT$native_access"]}