Ad

CVE-2026-20664

MEDIUM CVSS 3.1: 4.3 EPSS 0.03%
Updated Mar 25, 2026
Apple
Parameter Value
CVSS 4.3 (MEDIUM)
Affected Versions 26.0 — 26.4
Fixed In 26.4
Type CWE-787 (Out-of-bounds Write)
Vendor Apple
Public PoC No

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may lead to an unexpected process crash.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
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
None
No data modification
Availability
Low
Partial disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 5

Configuration From (including) Up to (excluding)
Apple Safari
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
26.4
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:*:*:*:*:*:*:*:*
26.0 26.4
Apple Visionos
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
26.4