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TI-2026-76653 Aliases CVE-2026-28853GHSA-3pjr-9287-h6cc

Apple macOS flaw lets apps gain higher privileges

Priority LOW 35CWE-269Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-269.

Summary

Apple macOS versions before 15.8 and before 26.7 are affected. Improper privilege management (CWE-269) lets a local app with low privileges gain higher privileges. The issue was addressed with improved checks.

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

Description from the CNA

The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to elevate privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00153 4th percentileScored 2026-11-07
Fix Fixed macOS (Apple): 15.8, 26.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 15.8; before 26.715.8, 26.7Patch availableCNA
  • macOS VendorApple Affected before 15.8; before 26.7 Fixed in 15.8, 26.7 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 15.8; 26.0 to before 26.7VulnerableApple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 15.8; 26.0 to before 26.7 Vulnerable ·Apple

Remediation

Apple fixes this in macOS Sequoia 15.8 and macOS Tahoe 26.7. Update macOS to one of these fixed versions.

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

  • Fix · CNA macOS (Apple) Fixed in 15.8, 26.7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple macOS 15.8, 26.7

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-76707 Out-of-bounds write in Apple macOS lets apps crash the systemPriority LOW 24
    • TI-2026-76693 Apple iOS, iPadOS and macOS out-of-bounds write causes system terminationPriority LOW 24
    • TI-2026-76680 Missing authorization in Apple macOS lets admins modify System KeychainPriority LOW 19
    Show all 4 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-28853
  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-3pjr-9287-h6cc
  6. 2026-10-21 CISA SSVC decision points changed

References

Advisory 2

  • 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