CVE-2026-2637 in NTFS
Summary
by MITRE • 03/03/2026
iBoysoft NTFS for Mac contains a local privilege escalation vulnerability in its privileged helper daemon ntfshelperd. The daemon exposes an NSConnection service that runs as root without implementing any authentication or authorization checks.
This issue affects iBoysoft NTFS: 8.0.0.
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Analysis
by VulDB Data Team • 03/03/2026
The vulnerability identified as CVE-2026-2637 resides within iBoysoft NTFS for Mac version 8.0.0, specifically targeting the privileged helper daemon named ntfshelperd. This daemon operates with root privileges, establishing a critical security flaw that enables local privilege escalation. The core technical issue stems from the daemon's exposure of an NSConnection service that lacks any form of authentication or authorization mechanisms. This design flaw allows any local user to interact with the privileged service without proper verification, creating an exploitable pathway for unauthorized privilege elevation. The vulnerability directly maps to CWE-284 Access Control, which addresses improper access control mechanisms that permit unauthorized users to access protected resources or services. From an operational security perspective, this represents a severe risk as it eliminates the fundamental principle of least privilege that should govern privileged system components. The NSConnection service acts as an attack surface that bypasses normal operating system security controls, enabling malicious actors to execute arbitrary code with root privileges. This flaw essentially undermines the security model of macOS by allowing local users to escalate their privileges without proper authentication checks.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it creates a persistent security risk for systems running affected versions of iBoysoft NTFS. Attackers can leverage this flaw to gain root access to systems, potentially leading to complete system compromise and data exfiltration. The vulnerability's exploitability is particularly concerning because it requires no network connectivity or remote access, making it a local privilege escalation vector that can be exploited from within the system itself. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1068 Privilege Escalation, specifically targeting the use of local services with elevated privileges. The lack of authentication checks means that any user with access to the system can potentially exploit this vulnerability, making it particularly dangerous in multi-user environments or shared computing scenarios. The daemon's design flaw creates a persistent backdoor-like mechanism that operates with root privileges, enabling attackers to install malware, modify system files, or establish persistent access. This vulnerability also represents a failure in the principle of defense in depth, as the privileged helper daemon should have implemented proper access controls to prevent unauthorized usage.
Mitigation strategies for CVE-2026-2637 should prioritize immediate remediation through software updates from iBoysoft, as the vendor must implement proper authentication and authorization checks within the ntfshelperd daemon. System administrators should disable the affected service if it's not required for operations, particularly in environments where security is paramount. The implementation of additional access controls such as code signing verification and sandboxing mechanisms can help reduce the attack surface. Organizations should also consider monitoring for unauthorized connections to privileged services and implementing process monitoring to detect suspicious activity. From a compliance standpoint, this vulnerability would likely fail to meet security requirements under frameworks such as NIST SP 800-53, which mandates proper access control mechanisms for privileged system components. The vulnerability highlights the importance of proper privileged access management and the necessity of implementing authentication checks for all services operating with elevated privileges. Regular security assessments should include verification of privileged helper daemons to ensure they properly enforce access controls and do not expose unauthenticated services. Additionally, system hardening practices should be implemented to restrict access to privileged services and ensure that only authorized processes can interact with them. The remediation process should also include verification that no unauthorized modifications have been made to the system and that proper access controls have been re-established.