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TI-2026-76706 Aliases CVE-2026-86979GHSA-c46j-mwhw-r25p

Privacy flaw in Apple macOS lets apps access sensitive user data

Priority LOW 24CWE-200Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
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-200.

Summary

Apple macOS before 27 contains a privacy flaw that exposes sensitive user data to an unauthorized actor, as the source describes it under CWE-200. A local user with low privileges can exploit it to access sensitive user data from an app. The vulnerability has no reported exploitation.

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

Description from the CNA

A privacy issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27. An app may be able to access sensitive user data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00161 5th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 27

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
ApplemacOSbefore 2727Patch availableCNA
  • macOS VendorApple Affected before 27 Fixed in 27 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 27.0VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 27.0 Vulnerable ·Apple

Remediation

Apple fixes this in macOS Golden Gate 27, so update macOS to version 27 or later.

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

  • Fix · CNA macOS (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 27

    16 records Highest priority Priority MEDIUM 1 MEDIUM, 15 LOW

    Other records, highest priority first

    • TI-2026-76687 Type confusion in Apple Safari and iOS allows code executionPriority MEDIUM 40
    • TI-2026-76654 Apple macOS may launch maliciously modified appsPriority LOW 38
    • TI-2026-76700 Race condition in Apple iOS, iPadOS and macOS lets apps escape sandboxPriority LOW 35
    Show all 16 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-86979
  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-c46j-mwhw-r25p

References

Advisory 1

  • 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 3490 →

Sources

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