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CVE-2026-20688

CRITICAL CVSS 3.1: 9.3 EPSS 0.02%
Updated Mar 26, 2026
Apple
Parameter Value
CVSS 9.3 (CRITICAL)
Affected Versions 14.0 — 26.4
Fixed In 26.4
Type CWE-22 (Path Traversal)
Vendor Apple
Public PoC No

A path handling issue was addressed with improved validation. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, visionOS 26.4. An app may be able to break out of its sandbox.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 6

Configuration From (including) Up to (excluding)
Apple Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
26.4
Apple Iphone_Os
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
26.4
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
14.0 14.8.5
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
15.0 15.7.5
Apple Macos
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
26.0 26.4
Apple Visionos
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
26.4