What’s Vulnerable › Vulnerabilities

CVE-2026-64783

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-27 · updated 2026-07-28
• Weakness: CWE-416

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Affected products

• Apple iPadOS: before 26.6 — fixed in 26.6
• Apple Iphone Os: before 26.6 — fixed in 26.6
• Apple macOS: from 26.0 before 26.6 — fixed in 26.6
• Apple Safari: before 26.6 — fixed in 26.6
• Apple visionOS: before 26.6 — fixed in 26.6
• Apple watchOS: before 26.6 — fixed in 26.6

How to fix

Upgrade to a fixed version: Apple iPadOS 26.6; Apple Iphone Os 26.6; Apple macOS 26.6; Apple Safari 26.6; Apple visionOS 26.6; Apple watchOS 26.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/128066
• https://support.apple.com/en-us/128067
• https://support.apple.com/en-us/128068
• https://support.apple.com/en-us/128070
• https://support.apple.com/en-us/128073

Get alerted when CVE-2026-64783 or the next vulnerability affects your stack