CVE-2026-20667

HIGH
2026-02-11 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 11, 2026 - 23:16 nvd
HIGH 8.8

Tags

Apple Information Disclosure

Description

A logic issue was addressed with improved checks. This issue is fixed in watchOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 26.3 and iPadOS 26.3. An app may be able to break out of its sandbox.

Analysis

Sandbox escape in Apple macOS, iOS, and watchOS allows local authenticated attackers to break out of application sandboxes and gain unauthorized access to system resources and other applications' data. The vulnerability stems from insufficient validation logic in sandbox enforcement mechanisms, enabling privilege escalation with high impact on confidentiality, integrity, and availability across affected devices. …

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Remediation

Within 24 hours: Identify and inventory all affected Apple devices (iOS 26.2 and below, macOS versions below 14.8.4/15.7.4, watchOS below 26.3). Within 7 days: Implement network segmentation for affected devices, disable non-essential features if available, and enable Enhanced Security monitoring. …

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Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +44
POC: 0

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CVE-2026-20667 vulnerability details – vuln.today
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