CVE-2026-24071VulnerabilityPublished 2 Feb 2026Updated 3 Feb 2026

CVE-2026-24071: Native Access · Time-of-check Time-of-use (TOCTOU) Race Condition

Affects Native AccessSource CVE Database V5

Not known to be exploited · CVSS 7.8 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

7.8High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector: Local
Attack Complexity: High
Privileges Required: Low
User Interaction: None
Scope: Changed
Confidentiality: High
Integrity: High
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 2 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Native InstrumentsNative Access	Affected =verified up to 3.22.0	Fixed in–

AI-suggested

1. Apply official patches from Native Instruments as soon as they become available to address the PID reuse verification flaw. 2. Until patches are released, restrict local system access to trusted users only, minimizing the risk of local exploitation. 3. Implement strict endpoint security controls, including application whitelisting and process monitoring, to detect anomalous behavior related to XPC service connections. 4. Monitor system logs and IPC activity for suspicious PID reuse patterns or unexpected connections to the privileged helper service. 5. Employ macOS security features such as System Integrity Protection (SIP) and sandboxing to limit the impact of potential privilege escalations. 6. Educate users and administrators about the risks of local privilege escalation vulnerabilities and enforce least privilege principles. 7. Consider network segmentation and host-based firewalls to limit lateral movement if an attacker gains local access. 8. Regularly audit installed software versions and update Native Access promptly to maintain security posture.

Description

CVE-2026-24071 is a high-severity TOCTOU race condition vulnerability in Native Instruments' Native Access software, affecting versions up to 3.22.0. The vulnerability arises because the privileged helper's XPC service verifies client code signatures based on the client's PID, which is susceptible to PID reuse attacks. An attacker with low privileges can exploit this flaw to impersonate a trusted process, potentially gaining elevated privileges and causing full compromise of confidentiality, integrity, and availability. Exploitation requires local access and high attack complexity but does not require user interaction. No known exploits are currently in the wild. European organizations using Native Access for managing Native Instruments products are at risk, especially those in music production, audio engineering, and related creative industries. Mitigation involves applying vendor patches once available, restricting local access to trusted users, and monitoring for suspicious local IPC activity. Countries with significant creative industries and high adoption of Native Instruments software, such as Germany, the UK, France, and the Netherlands, are most likely to be affected.

Impact

For European organizations, the impact of CVE-2026-24071 can be substantial, especially those relying on Native Instruments software for professional audio production, music creation, and sound engineering. Exploitation could allow attackers to escalate privileges on affected systems, leading to unauthorized access to sensitive project files, intellectual property theft, and potential disruption of production workflows. The compromise of confidentiality could expose proprietary audio assets and licensing information, while integrity and availability impacts could result in corrupted or unavailable software management services, hindering updates and license validation. Since Native Access is used to manage software licenses and updates, attackers could potentially manipulate licensing mechanisms, causing financial and operational damage. The local nature of the attack vector means that insider threats or attackers with initial footholds could leverage this vulnerability to deepen their access. Given the creative industry's economic importance in Europe, such disruptions could have broader business and reputational consequences.

Summary

CVE-2026-24071 is a time-of-check to time-of-use (TOCTOU) race condition vulnerability classified under CWE-367, found in Native Instruments' Native Access software up to version 3.22.0. The issue stems from the privileged helper's XPC service, which attempts to verify the connecting client's code signature by using the client's process identifier (PID) obtained via _xpc_connection_get_pid(). This approach is insecure because PIDs can be reused by the operating system after a process terminates, allowing an attacker to exploit a race condition where a malicious process can assume the PID of a trusted process. Consequently, the hasValidSignature function may incorrectly validate the attacker's process as legitimate. This flaw enables a local attacker with low privileges to impersonate a trusted client, potentially escalating privileges and executing arbitrary code with elevated rights. The vulnerability affects confidentiality, integrity, and availability, as the attacker can manipulate the privileged helper's operations. The CVSS v3.1 score is 7.8 (high), reflecting local attack vector, high attack complexity, low privileges required, no user interaction, and a scope change due to privilege escalation. No public exploits are known yet, but the vulnerability poses a significant risk to environments where Native Access is used for managing Native Instruments software licenses and updates. The vulnerability is particularly relevant to macOS environments where XPC services are common. The lack of a patch at the time of reporting necessitates immediate risk mitigation by restricting local access and monitoring.

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition (opens in a new tab)
Base weaknessLikelihood of exploit: Medium
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
Implementation
The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.
Implementation
When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.
Architecture and Design
Limit the interleaving of operations on files from multiple processes.
OWASP Cheat Sheets
Abuse Case (opens in a new tab)
OWASP ASVS 4.0.3
V1.11.3 (opens in a new tab)
V11.1.6 (opens in a new tab)
V1.11.2 (opens in a new tab)
Attack patterns
Leveraging Race Conditions via Symbolic Links (opens in a new tab)
Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-native-instruments-native-access-macos/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Feb 2026, 11:14 UTC

WeaknessesCWE-367

Technical details

References

Community reviews

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