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CVE-2026-64771

CRITICAL

9.8

CVSS Severity Score

EPSS Score0.2620%

EPSS Percentile17.87th

Published2026-07-27

Last Modified2026-07-28

Data SourcesNVDFIRST.org EPSS

Vulnerability Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in 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 Platforms (CPE)

💻

Apple

Ipados

< 26.6

💻

Apple

Iphone Os

< 26.6

💻

Apple

Macos

>= 15.0 and < 15.7.8>= 26.0 and < 26.6

💻

Apple

Tvos

< 26.6

References & Advisories

🔗 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

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CVE-2026-64771 Detail & Impact Analysis | CVSS 9.8 (CRITICAL) | Cyber-Sec.Space | Cyber-Sec.Space