What’s Vulnerable › Vulnerabilities

CVE-2026-64771

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-27 · updated 2026-08-17
• Weakness: CWE-119

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.

Affected products

• Apple iPadOS: before 26.6 — fixed in 26.6
• Apple Iphone Os: before 26.6 — fixed in 26.6
• Apple macOS: from 15.0 before 15.7.8; from 26.0 before 26.6 — fixed in 15.7.8, 26.6
• Apple tvOS: before 26.6 — fixed in 26.6
• Apple visionOS: 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 15.7.8, 26.6; Apple tvOS 26.6; Apple visionOS 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/128069
• https://support.apple.com/en-us/128070
• https://support.apple.com/en-us/128071
• https://support.apple.com/en-us/148287

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