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TI-2026-59388 Aliases CVE-2026-86870GHSA-4hc9-v4r7-pw4j

Heap-based buffer overflow in Apple iOS and iPadOS

Priority LOW 29CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
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-122 and the CVSS impact.

Summary

A heap buffer overflow 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, visionOS 27, watchOS 27. Processing a maliciously crafted file may lead to unexpected app termination.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00451 39th percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 26.7, 27macOS (Apple): 27+2 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 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 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 configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 26.7VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 26.7VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 27.0VulnerableApple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*before 27.0VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 27.0VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 26.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple

Remediation

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

    92 records Highest priority Priority MEDIUM 8 MEDIUM, 84 LOW

    Other records, highest priority first

    • TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
    • TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
    • TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
    Show all 92 records →
  • Release ·

    Apple watchOS 27

    78 records Highest priority Priority MEDIUM 8 MEDIUM, 70 LOW

    Other records, highest priority first

    • TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
    • TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
    • TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
    Show all 78 records →
Show 2 more groups
  • Release ·

    Apple iOS and iPadOS 26.7, 27

    73 records Highest priority Priority MEDIUM 4 MEDIUM, 69 LOW

    Other records, highest priority first

    • TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
    • TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
    • TI-2026-59392 Improper certificate validation in Apple iOS and iPadOSPriority MEDIUM 47
    Show all 73 records →
  • Release ·

    Apple macOS 27

    50 records Highest priority Priority MEDIUM 2 MEDIUM, 48 LOW

    Other records, highest priority first

    • TI-2026-58087 Buffer overflow in Apple macOSPriority MEDIUM 49
    • TI-2026-58171 Information disclosure in Apple iOS and iPadOSPriority MEDIUM 42
    • TI-2026-59405 Protection mechanism failure in Apple macOSPriority LOW 39
    Show all 50 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86870
  2. 2026-10-03 Alias added: GHSA-4hc9-v4r7-pw4j

References

Advisory 5

  • 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
  • TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
See all 2382 →

Sources

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