macOS CVE-2026-86932

Exploitation requires a locally present, executing application on macOS before the Golden Gate 27 fix; the attacker needs the app to run with at least low privileges (PR:L) on the target system, so initial code execution on the device is a prerequisite. There is no remote or network-triggerable path (AV:L), and no legitimate user interaction with the vulnerable component is required (UI:N). The practical limiting factor is that an attacker must first get a malicious or compromised app installed and run on the victim's Mac; impact is confined to disclosure of sensitive user data (C:H, I:N, A:N), with no modification or denial of service.

This is a moderate, locally-scoped authorization flaw (CWE-862, Missing Authorization) rather than a high-urgency remote threat. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, base 5.5) confirms a local attack vector requiring low privileges and no user interaction, with high confidentiality impact but no integrity or availability impact - consistent with a malicious or sandboxed app on the device reading data it should not reach. No EPSS score was provided in the input, the CVE is not listed in CISA KEV, and no public exploit was supplied, so there is no public exploit identified at time of analysis and no evidence of active exploitation. The signals are internally consistent: a local, privilege-requiring, confidentiality-only bug reported by the vendor (Apple) is a typical maintenance-grade patch item, not an emergency. Note one metadata tension to verify: the input Tags label this 'Authentication Bypass,' but the CWE (862) and description describe an authorization/access-control failure, not authentication bypass - treat the tag as approximate.

A user installs or runs a malicious or compromised application on a macOS system prior to Golden Gate 27. Because of improper state management in an authorization check, the app bypasses access controls and reads sensitive user data it should not be permitted to access. No public exploit code was provided, and exploitation requires local code execution via the app, not a remote network request.