CVE-2026-24071
Race Condition in Native-Instruments Native Access ≤ 3.22.0
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-24071 is a high-severity Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367) vulnerability in Native-Instruments Native Access. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception (T1034); ranked at the 5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to AC-25 (Reference Monitor) and AC-3 (Access Enforcement) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-24071 is a vulnerability in the XPC service provided by the privileged helper of Native Instruments' Native Access on macOS. The issue stems from the service using the process ID (PID) of the connecting client, obtained via _xpc_connection_get_pid(), to verify the client's code signature in the hasValidSignature function. This approach is insecure because the PID value cannot be trusted, making it susceptible to PID reuse attacks, as classified under CWE-367 (Time-of-check Time-of-use (TOCTOU) Race Condition). The vulnerability was published on 2026-02-02 and carries a CVSS v3.1 base score of 7.8 (AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H).
A local attacker with low privileges can exploit this vulnerability by leveraging PID reuse to impersonate a legitimate signed client connecting to the privileged XPC service. The high attack complexity arises from the need to manipulate process IDs effectively, but once successful, the attacker bypasses code signature checks. This grants high-impact access to confidentiality, integrity, and availability, with a changed scope that elevates privileges through the helper tool.
For mitigation details, refer to the advisory published by SEC Consult at https://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-native-instruments-native-access-macos/.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-5109
Vulnerability Data
It was found that the XPC service offered by the privileged helper of Native Access uses the PID of the connecting client to verify its code signature. This is considered insecure and can be exploited by PID reuse attacks. The…
more
connection handler function uses _xpc_connection_get_pid(arg2) as argument for the hasValidSignature function. This value can not be trusted since it is vulnerable to PID reuse attacks.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V15.4.2V17.2.6
Mitigating Controls (NIST 800-53 r5) AI
A reference monitor that is always invoked and analyzable structurally eliminates the non-atomic check-then-use pattern underlying TOCTOU.
Access enforcement that performs an atomic check-and-use decision directly stops the window in which a TOCTOU race can be exploited.
Process isolation limits the blast radius of a successful TOCTOU exploitation but does not remove the race itself.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly include coding standards and reviews that prevent TOCTOU race conditions.