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TI-2026-76670 Aliases CVE-2026-84508GHSA-xr5p-5qfr-xq46

Access control flaw in Apple iOS, macOS and visionOS exposes user data

Priority LOW 24CWE-284Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-284.

Summary

Apple iOS and iPadOS before 27, macOS before 26.7 and before 27, and visionOS before 27 are affected. The flaw is improper access control (CWE-284), where the system does not properly validate the caller's access. A local attacker with low privileges can access protected user data without user interaction.

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

Description from the CNA

This issue was addressed with improved validation of the caller's access. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Tahoe 26.7, visionOS 27. An app may be able to access protected user data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00146 3rd percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 27macOS (Apple): 26.7, 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 26.7; before 2726.7, 27Patch availableCNA
ApplevisionOSbefore 2727Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
  • macOS VendorApple Affected before 26.7; before 27 Fixed in 26.7, 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:*:*:*:*:*:*:*:*before 26.7VulnerableApple
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 before 26.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple

Remediation

Update iOS and iPadOS to 27, macOS to 26.7 or 27, and visionOS to 27.

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

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 27
  • Fix · CNA macOS (Apple) Fixed in 26.7, 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 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-2026-76698 Out-of-bounds read in Apple operating systems can crash the systemPriority LOW 29
    Show all 14 records →
  • Release ·

    Apple iOS and iPadOS 27

    11 records Highest priority Priority MEDIUM 1 MEDIUM, 10 LOW

    Other records, highest priority first

    • TI-2026-76687 Type confusion in Apple Safari and iOS allows code executionPriority MEDIUM 40
    • TI-2026-76705 Incorrect authorization in Apple iOS and iPadOS may let apps place callsPriority LOW 38
    • TI-2026-76700 Race condition in Apple iOS, iPadOS and macOS lets apps escape sandboxPriority LOW 35
    Show all 11 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-84508
  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-xr5p-5qfr-xq46

References

Advisory 4

  • 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