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CVE-2026-84595

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, visionOS 27. An a

Apple iOS and iPadOSOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in27Also 15.8.2, 26.7.2CVE List
Published26 Oct 2026Updated 26 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, visionOS 27. An app may be able to cause unexpected system termination.

Text from CVE List

Affected versions 5

  • iOS and iPadOSaffected: all versions before 27CVE List
  • macOSaffected: all versions before 15.8.2CVE List
  • macOSaffected: all versions before 26.7.2CVE List
  • macOSaffected: all versions before 27CVE List
  • visionOSaffected: all versions before 27CVE List

References 5