TI-2026-80808 Aliases CVE-2026-112544 GHSA-c2f5-vrg4-xpj9

Out-of-bounds write in Apple macOS crashes system via disk image

LOW 29CWE-787Published 2026-10-26 · Updated 2026-10-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
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-787 and the CVSS impact.

Summary

Apple macOS from 0 before 27.2 contains an out-of-bounds write flaw (CWE-787) that is addressed with improved bounds checking. A remote attacker can cause unexpected system termination by getting a user to mount a malicious disk image, and no user interaction beyond that mount is needed to trigger the crash.

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

Description from the CNA

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27.2. Mounting a malicious disk image may cause unexpected system termination.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00377 31st percentileScored 2026-11-07

Fix Fixed macOS (Apple): 27.2

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 27.2	27.2	Patch available	CNA

macOS VendorApple Affected before 27.2 Fixed in 27.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:macos::::::::	before 27.2	Vulnerable	Apple

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 27.2 Vulnerable ·Apple

Remediation

Apple fixes this in macOS 27.2, so update macOS to version 27.2 or later.

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

Fix · CNA macOS (Apple) Fixed in 27.2

Fixed in the same release

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

Release · 2026-10-26
Apple macOS 27.2
78 records Highest priority Priority MEDIUM 23 MEDIUM, 55 LOW
Other records, highest priority first
- TI-2026-80671 Sandbox escape in Apple Safari and other Apple platformsPriority MEDIUM 50
- TI-2026-80835 Out-of-bounds read in Apple iOS, iPadOS and macOS may leak memoryPriority MEDIUM 42
- TI-2026-80618 Memory corruption in Apple platforms via crafted video filePriority MEDIUM 42
Show all 78 records →

Timeline

2026-10-26 Threatist record created from CVE-2026-112544
2026-10-27 CVSS score added · CISA ADP
2026-10-27 Weakness changed · CISA ADP
2026-10-27 CISA SSVC decision points changed
2026-10-27 Alias added: GHSA-c2f5-vrg4-xpj9

References

Advisory 1

https://support.apple.com/en-us/149521

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