TI-2026-76692 Aliases CVE-2026-86940 GHSA-2hpx-x8qv-fhv9

Information disclosure in Apple macOS exposes kernel memory

LOW 24CWE-200Published 2026-10-20 · Updated 2026-10-26

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 has an information exposure flaw (CWE-200) in which an app can disclose kernel memory. A local user with low privileges can exploit it without user interaction, and it is not listed as exploited.

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

Description from the CNA

This issue was addressed by removing the vulnerable code. This issue is fixed in macOS Golden Gate 27. An app may be able to disclose kernel memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00147 3rd 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	macOS	before 27	27	Patch available	CNA

macOS VendorApple Affected before 27 Fixed in 27 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:macos::::::::	before 27.0	Vulnerable	Apple

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

Remediation

Apple macOS Golden Gate 27 contains the fix, so update affected macOS systems to version 27.

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 · 2026-10-20
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

2026-10-20 Threatist record created from CVE-2026-86940
2026-10-20 CVSS score added · CISA ADP
2026-10-20 Weakness changed · CISA ADP
2026-10-20 CISA SSVC decision points changed
2026-10-21 Alias added: GHSA-2hpx-x8qv-fhv9

References

Advisory 1

https://support.apple.com/en-us/149035

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