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CVE-2026-20687

HIGH CVSS 3.1: 7.1 EPSS 0.01%
Updated Mar 25, 2026
Apple
Parameter Value
CVSS 7.1 (HIGH)
Affected Versions 15.0 — 26.4
Fixed In 18.7.7
Type CWE-416 (Use After Free)
Vendor Apple
Public PoC No

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.

Attack Parameters

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

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 8

Configuration From (including) Up to (excluding)
Apple Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
18.7.7
Apple Ipados
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
26.0 26.4
Apple Iphone_Os
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
18.7.7
Apple Iphone_Os
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
26.0 26.4
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 Tvos
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
26.4
Apple Watchos
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
26.4