EUVD-2026-15171
GHSA-cpwg-vrfx-x8g6
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
4DescriptionCVE.org
A permissions issue was addressed by removing the vulnerable code. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to modify protected parts of the file system.
AnalysisAI
A permissions enforcement vulnerability in macOS allows applications to bypass file system protections and modify protected system files or directories through inadequate access controls. This affects macOS Sequoia (before 15.7.5), macOS Sonoma (before 14.8.5), and macOS Tahoe (before 26.4). Apple has addressed the issue by removing vulnerable code, and no active exploitation or proof-of-concept has been publicly disclosed at this time.
Technical ContextAI
The vulnerability exists in Apple's macOS operating system file system permissions architecture, affecting multiple major versions identified via CPE (cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:*). The root cause is classified as a permissions issue (CWE category: improper access control or authorization), where the kernel or file system driver failed to properly validate or enforce access control lists (ACLs) and file system protections when third-party applications attempted filesystem operations. This represents a failure in the privilege separation model that ordinarily prevents unprivileged applications from modifying protected system directories such as /System, /Library, or /Applications at the kernel level.
RemediationAI
Immediately update affected macOS systems to the patched versions: macOS Sequoia 15.7.5 or later, macOS Sonoma 14.8.5 or later, or macOS Tahoe 26.4 or later. These updates are available through System Preferences > General > Software Update or can be downloaded directly from Apple's support pages (https://support.apple.com/en-us/126794, https://support.apple.com/en-us/126795, https://support.apple.com/en-us/126796). Until patching is completed, enforce application sandboxing policies, disable execution of untrusted applications, and restrict user account privileges to prevent installation of potentially malicious software that could exploit this permissions bypass.
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External POC / Exploit Code
Leaving vuln.today