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TI-2026-80592 Aliases CVE-2026-84595GHSA-hqjw-5f56-jvqq

Out-of-bounds write in Apple iOS, macOS and visionOS

Priority LOW 24CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
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-787 and the CVSS impact.

Summary

Apple iOS and iPadOS before 27, macOS before 15.8.2, before 26.7.2 and before 27, and visionOS before 27 are affected by an out-of-bounds write (CWE-787). Improved bounds checking addresses the flaw, which lets an app cause unexpected system termination. A local user with low privileges can trigger it through an app.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00164 5th percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 27macOS (Apple): 15.8.2, 26.7.2, 27+1 more product

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 2727Patch availableCNA
ApplemacOSbefore 15.8.2; before 26.7.2; before 2715.8.2, 26.7.2, 27Patch availableCNA
ApplevisionOSbefore 2727Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
  • macOS VendorApple Affected before 15.8.2; before 26.7.2; before 27 Fixed in 15.8.2, 26.7.2, 27 Patch available CNA
  • visionOS VendorApple Affected before 27 Fixed in 27 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 27.0VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 27.0VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*15.0 to before 15.8.2; 26.0 to before 26.7.2VulnerableApple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*before 27.0VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 15.0 to before 15.8.2; 26.0 to before 26.7.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple

Remediation

Fixed versions are iOS 27 and iPadOS 27 for iOS and iPadOS, macOS 15.8.2, macOS 26.7.2 and macOS 27 for macOS, and visionOS 27 for visionOS.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 27
  • Fix · CNA macOS (Apple) Fixed in 15.8.2, 26.7.2, 27
  • Fix · CNA visionOS (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 15.8.2, 26.7.2, 27

    20 records Highest priority Priority MEDIUM 1 MEDIUM, 19 LOW

    Other records, highest priority first

    • TI-2026-80711 Out-of-bounds write in Apple macOS lets crafted files run codePriority MEDIUM 41
    • TI-2026-80701 Use after free in Apple macOS allows sandbox escape to rootPriority LOW 39
    • TI-2026-80688 Apple iOS, iPadOS and macOS flaw lets apps break out of sandboxPriority LOW 38
    Show all 20 records →
  • Release ·

    Apple visionOS 27

    10 records Highest priority Priority LOW 10 LOW

    Other records, highest priority first

    • TI-2026-80705 Apple iOS, macOS and visionOS buffer overflow from a crafted imagePriority LOW 33
    • TI-2026-80593 Memory flaw in Apple platforms lets apps corrupt kernel memoryPriority LOW 33
    • TI-2026-80706 Race condition in Apple iOS, macOS and visionOS lets apps write kernel memoryPriority LOW 29
    Show all 10 records →
Show 1 more group
  • Release ·

    Apple iOS and iPadOS 27

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-80706 Race condition in Apple iOS, macOS and visionOS lets apps write kernel memoryPriority LOW 29
    • TI-2026-80721 Null pointer dereference in Apple OS lets apps crash the systemPriority LOW 24
    • TI-2026-80836 Out-of-bounds read in Apple operating systems leaks process memoryPriority LOW 20
    Show all 4 records →

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-84595
  2. 2026-10-27 Alias added: GHSA-hqjw-5f56-jvqq
  3. 2026-11-02 CVSS score added · NVD
  4. 2026-11-02 Weakness changed · NVD
  5. 2026-11-03 CVSS score added · CISA ADP
  6. 2026-11-03 Weakness changed · CISA ADP
  7. 2026-11-03 CISA SSVC decision points changed

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