TI-2026-58110 Aliases CVE-2026-84549 GHSA-g93j-m553-jp8w

Out-of-bounds read in Apple macOS

MEDIUM 40CWE-125Published 2026-09-14 · Updated 2026-10-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious NFS server may cause unexpected system termination or corrupt kernel memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00567 47th percentileScored 2026-11-07

Fix Fixed macOS (Apple): 15.8, 26.7, 27

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
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 15.8; before 26.7; before 27	15.8, 26.7, 27	Patch available	CNA

macOS VendorApple Affected before 15.8; before 26.7; before 27 Fixed in 15.8, 26.7, 27 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:macos::::::::	15.0 to before 15.8; 26.0 to before 26.7	Vulnerable	Apple

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 15.0 to before 15.8; 26.0 to before 26.7 Vulnerable ·Apple

Remediation

Fix · CNA macOS (Apple) Fixed in 15.8, 26.7, 27

Fixed in the same release

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

Release · 2026-09-14
Apple macOS 15.8, 26.7, 27
136 records Highest priority Priority MEDIUM 14 MEDIUM, 122 LOW
Other records, highest priority first
- TI-2026-46597 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-58158 Buffer overflow in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-58121 Double free in Apple iOS and iPadOSPriority MEDIUM 50
Show all 136 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-84549
2026-10-03 Alias added: GHSA-g93j-m553-jp8w

References

Advisory 3

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