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TI-2026-76698 Aliases CVE-2026-86957GHSA-mcq2-6h3f-3vf3

Out-of-bounds read in Apple operating systems can crash the system

Priority LOW 29CWE-125Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

Apple iOS and iPadOS before 26.7 and 27, macOS before 15.8, 26.7 and 27, and tvOS, visionOS and watchOS before 27 are affected. An out-of-bounds read (CWE-125) lets the software read memory outside its intended buffer. An attacker in wireless proximity can cause unexpected system termination, with no privileges or user interaction needed.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker in wireless proximity may be able to cause unexpected system termination.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00316 24th percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 26.7, 27macOS (Apple): 15.8, 26.7, 27+3 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOS and iPadOSbefore 26.7; before 2726.7, 27Patch availableCNA
ApplemacOSbefore 15.8; before 26.7; before 2715.8, 26.7, 27Patch availableCNA
AppletvOSbefore 2727Patch availableCNA
ApplevisionOSbefore 2727Patch availableCNA
ApplewatchOSbefore 2727Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 26.7; before 27 Fixed in 26.7, 27 Patch available CNA
  • macOS VendorApple Affected before 15.8; before 26.7; before 27 Fixed in 15.8, 26.7, 27 Patch available CNA
  • tvOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
  • visionOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
  • watchOS VendorApple Affected before 27 Fixed in 27 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*——Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions — — ·Apple

Remediation

Apple fixed the issue in iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27 and watchOS 27.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 26.7, 27
  • Fix · CNA macOS (Apple) Fixed in 15.8, 26.7, 27
  • Fix · CNA tvOS (Apple) Fixed in 27
  • Fix · CNA visionOS (Apple) Fixed in 27
  • Fix · CNA watchOS (Apple) Fixed in 27

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple macOS 15.8, 26.7, 27

    15 records Highest priority Priority MEDIUM 3 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2026-76675 Authentication issue in Apple macOS lets attackers impersonate usersPriority MEDIUM 48
    • TI-2026-76672 Improper checks in Apple macOS lead to unexpected software executionPriority MEDIUM 41
    • TI-2026-76685 Stack overflow in Apple iOS, macOS and visionOS allows code executionPriority MEDIUM 40
    Show all 15 records →
  • Release ·

    Apple visionOS 27

    14 records Highest priority Priority MEDIUM 2 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2026-76687 Type confusion in Apple Safari and iOS allows code executionPriority MEDIUM 40
    • TI-2026-76685 Stack overflow in Apple iOS, macOS and visionOS allows code executionPriority MEDIUM 40
    • TI-2026-76674 Out-of-bounds write in Apple operating systems can crash devicesPriority LOW 29
    Show all 14 records →
Show 3 more groups
  • Release ·

    Apple watchOS 27

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2026-76674 Out-of-bounds write in Apple operating systems can crash devicesPriority LOW 29
    • TI-2026-76701 Double free in Apple iOS, iPadOS and macOS causes system terminationPriority LOW 24
    • TI-2026-76681 Use after free in Apple operating systems when processing media filesPriority LOW 24
    Show all 9 records →
  • Release ·

    Apple iOS and iPadOS 26.7, 27

    8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW

    Other records, highest priority first

    • TI-2026-76685 Stack overflow in Apple iOS, macOS and visionOS allows code executionPriority MEDIUM 40
    • TI-2026-76674 Out-of-bounds write in Apple operating systems can crash devicesPriority LOW 29
    • TI-2026-76686 Apple iOS and macOS permissions flaw lets attackers overwrite filesPriority LOW 27
    Show all 8 records →
  • Release ·

    Apple tvOS 27

    8 records Highest priority Priority LOW 8 LOW

    Other records, highest priority first

    • TI-2026-76674 Out-of-bounds write in Apple operating systems can crash devicesPriority LOW 29
    • TI-2026-76701 Double free in Apple iOS, iPadOS and macOS causes system terminationPriority LOW 24
    • TI-2026-76681 Use after free in Apple operating systems when processing media filesPriority LOW 24
    Show all 8 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-86957
  2. 2026-10-20 CVSS score added · CISA ADP
  3. 2026-10-20 Weakness changed · CISA ADP
  4. 2026-10-20 CISA SSVC decision points changed
  5. 2026-10-20 Alias added: GHSA-mcq2-6h3f-3vf3

References

Other 8

  • TI-2026-46583 Improper authentication in Apple macOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
See all 9536 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences