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TI-2026-76691 Aliases CVE-2026-86935GHSA-254r-9hrv-hg33

Privilege management flaw in Apple macOS exposes user-sensitive data

Priority LOW 23CWE-266Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
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-266.

Summary

Apple macOS before 27 contains an improper privilege management flaw (CWE-269) that gives apps more entitlements than they need. A local app with low privileges can access user-sensitive data without any user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

This issue was addressed by removing additional entitlements. This issue is fixed in macOS Golden Gate 27. An app may be able to access user-sensitive data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00095 0th 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

Update Apple macOS to version 27, which fixes this issue by removing the additional entitlements.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • 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-2026-86935
  2. 2026-10-29 CVSS score added · NVD
  3. 2026-10-29 Weakness changed · NVD
  4. 2026-10-29 Alias added: GHSA-254r-9hrv-hg33
  5. 2026-10-30 CVSS score added · CISA ADP
  6. 2026-10-30 Weakness changed · CISA ADP
  7. 2026-10-30 CISA SSVC decision points changed

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