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TI-2026-80593 Aliases CVE-2026-84599GHSA-5vgf-vp9r-h5c9

Memory flaw in Apple platforms lets apps corrupt kernel memory

Priority LOW 33CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Apple iOS and iPadOS before 26.7.2 and before 27, macOS before 15.8, before 26.7 and before 27, and tvOS, visionOS and watchOS before 27 are affected. The flaw is a memory bounds error (CWE-119) that Apple describes only as a memory handling issue. A local app with low privileges can cause unexpected system termination or corrupt kernel memory.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

The issue was addressed with improved memory handling. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to cause unexpected system termination or corrupt kernel memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00139 3rd percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 26.7.2, 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 26.7.2; before 2726.7.2, 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 26.7.2; before 27 Fixed in 26.7.2, 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 configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 26.7.2VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 26.7.2VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*15.0 to before 15.8; 26.0 to before 26.7.2VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*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 26.7.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 26.7.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 15.0 to before 15.8; 26.0 to before 26.7.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* 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

Update iOS and iPadOS to 26.7.2 or 27, macOS to 15.8, 26.7 or 27, and tvOS, visionOS and watchOS to 27.

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

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

    12 records Highest priority Priority MEDIUM 1 MEDIUM, 11 LOW

    Other records, highest priority first

    • TI-2026-80588 Integer overflow in Apple iOS, iPadOS and macOS image processingPriority MEDIUM 40
    • TI-2026-80688 Apple iOS, iPadOS and macOS flaw lets apps break out of sandboxPriority LOW 38
    • TI-2026-80705 Apple iOS, macOS and visionOS buffer overflow from a crafted imagePriority LOW 33
    Show all 12 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-2026-80706 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
    Show all 10 records →
Show 2 more groups
  • Release ·

    Apple tvOS, watchOS 27

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-80721 Null pointer dereference in Apple OS lets apps crash the systemPriority LOW 24
    • TI-2026-80719 Out-of-bounds read in Apple OS crashes apps when processing imagesPriority LOW 24
    • TI-2026-80836 Out-of-bounds read in Apple operating systems leaks process memoryPriority LOW 20
    Show all 4 records →
  • Release ·

    Apple macOS 15.8, 26.7, 27

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-80588 Integer overflow in Apple iOS, iPadOS and macOS image processingPriority MEDIUM 40
    Show all 2 records →

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-84599
  2. 2026-10-27 Alias added: GHSA-5vgf-vp9r-h5c9
  3. 2026-11-02 CVSS score added · NVD
  4. 2026-11-02 CVSS score added · CISA ADP
  5. 2026-11-02 Weakness changed · CISA ADP
  6. 2026-11-02 CISA SSVC decision points changed

References

Advisory 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
  • 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