CVE-2026-65327 in macOS
Summary
by MITRE • 10/26/2026
A logic issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. A local attacker may be able to elevate their privileges.
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Analysis
by VulDB Data Team • 10/26/2026
The vulnerability described involves a logic error within the operating system's privilege management subsystems, specifically addressed through improved validation checks in recent updates for macOS Golden Gate 27.2, macOS Sequoia 15.8.2, and macOS Tahoe 26.7.2. This type of flaw typically arises when an application or system service fails to correctly verify the authorization state of a user or process before granting access to sensitive resources or executing privileged operations. In many cases, such logic issues stem from race conditions where timing gaps allow an attacker to manipulate the sequence of checks, or from insufficient boundary validation that permits unexpected input states to bypass security controls. The core technical flaw lies in the failure of the system to enforce strict state transitions and access control policies consistently across all code paths, allowing a local actor to exploit these inconsistencies to perform actions reserved for higher-privileged entities.
From an operational perspective, this vulnerability poses a significant risk as it enables privilege escalation on affected macOS systems. A local attacker who gains initial foothold through any means, such as physical access or exploiting a lesser-severity remote vector, can leverage this logic flaw to elevate their privileges from standard user level to administrative or root levels. This elevation grants the attacker unrestricted control over the system, including the ability to install persistent malware, exfiltrate sensitive data, modify system configurations, and disable security features like Gatekeeper or FileVault. The impact is severe because it effectively neutralizes many of the sandboxing and isolation mechanisms designed to contain threats within limited user contexts.
This vulnerability aligns with Common Weakness Enumeration category CWE-269, which covers Improper Privilege Management, specifically where software does not properly assign privileged functions to authorized actors. It also relates closely to CWE-841, Improper Enforcement of Behavioral Workflow, as the logic error likely involves a deviation from expected execution paths that bypass security checks. In terms of adversary tactics and techniques, this flaw facilitates MITRE ATT&CK technique T1068, Exploitation for Privilege Escalation, allowing attackers to move laterally or maintain persistence by gaining higher-level access credentials without detection. The absence of proper validation in the privilege escalation logic represents a critical failure in defense-in-depth strategies that rely on least-privilege principles.
To mitigate this risk, organizations must ensure that all macOS endpoints are updated to the specified versions: Golden Gate 27.2, Sequoia 15.8.2, or Tahoe 26.7.2. These updates contain the necessary code patches that enforce stricter checks and close the logic gaps exploited by attackers. Administrators should implement automated patch management solutions to ensure timely deployment of security fixes across all managed devices. Additionally, enforcing multi-factor authentication for administrative accounts and restricting physical access to workstations can reduce the attack surface available to local adversaries attempting to exploit such vulnerabilities. Continuous monitoring for unusual privilege changes or unauthorized process executions can also help detect potential exploitation attempts in real-time before significant damage occurs.