What’s Vulnerable › Vulnerabilities

CVE-2026-64778

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-17 · updated 2026-10-26
• Weakness: CWE-200

Description

The issue was addressed with improved checks. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Visiting a maliciously crafted website may leak sensitive data.

Affected products

• Apple iPadOS: before 18.7.10; from 26.0 before 26.6.1 — fixed in 18.7.10, 26.6.1
• Apple Iphone Os: before 18.7.10; from 26.0 before 26.6.1 — fixed in 18.7.10, 26.6.1
• Apple macOS: from 26.0 before 26.6.2 — fixed in 26.6.2
• Apple Safari: before 26.6.1 — fixed in 26.6.1
• Apple iOS and iPadOS: before 18.7.10; before 26.6.1 — fixed in 18.7.10, 26.6.1
• Apple macOS: before 26.6.2 — fixed in 26.6.2
• Apple Safari: before 26.6.1 — fixed in 26.6.1
• Apple tvOS: before 27 — fixed in 27
• Apple visionOS: before 27 — fixed in 27
• Apple watchOS: before 27 — fixed in 27

How to fix

Upgrade to a fixed version: Apple iPadOS 18.7.10, 26.6.1; Apple Iphone Os 18.7.10, 26.6.1; Apple macOS 26.6.2; Apple Safari 26.6.1; Apple iOS and iPadOS 18.7.10, 26.6.1; Apple macOS 26.6.2; Apple Safari 26.6.1; Apple tvOS 27; Apple visionOS 27; Apple watchOS 27. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/148281
• https://support.apple.com/en-us/148282
• https://support.apple.com/en-us/148286
• https://support.apple.com/en-us/148287
• https://support.apple.com/en-us/149036
• https://support.apple.com/en-us/149037
• https://support.apple.com/en-us/149038

Get alerted when CVE-2026-64778 or the next vulnerability affects your stack