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CVE-2026-86953

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, tvOS 27, visionOS 27, watchOS 27. An attacker in physical p

Apple iOS and iPadOSOperating systems
Open in ThreatlineRecord JSON
CVSS
4.6Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in27Fixed versionCVE List
Published20 Oct 2026Updated 20 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, tvOS 27, visionOS 27, watchOS 27. An attacker in physical proximity may be able to cause a denial-of-service.

Text from CVE List

Affected versions 5

  • iOS and iPadOSaffected: all versions before 27CVE List
  • macOSaffected: all versions before 27CVE List
  • tvOSaffected: all versions before 27CVE List
  • visionOSaffected: all versions before 27CVE List
  • watchOSaffected: all versions before 27CVE List

References 5