TI-2023-12543 Aliases CVE-2023-27953 GHSA-7cm5-9qc6-j36q

Out-of-bounds write in Apple macOS

MEDIUM 52CWE-787Published 2023-05-08 · Updated 2025-11-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
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-787 and the CVSS impact.

Summary

The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.3, macOS Monterey 12.6.4, macOS Big Sur 11.7.5. A remote user may be able to cause unexpected system termination or corrupt kernel memory.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01604 75th percentileScored 2026-11-07

Fix Fixed macOS (Apple): 13.3, 12.6, 11.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

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 13.3	13.3	Patch available	CNA
Apple	macOS	before 12.6	12.6	Patch available	CNA
Apple	macOS	before 11.7	11.7	Patch available	CNA

macOS VendorApple Affected before 13.3 Fixed in 13.3 Patch available CNA
macOS VendorApple Affected before 12.6 Fixed in 12.6 Patch available CNA
macOS VendorApple Affected before 11.7 Fixed in 11.7 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:macos::::::::	11.0 to before 11.7.5; 12.0 to before 12.6.4; 13.0 to before 13.3	Vulnerable	Apple

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0 to before 11.7.5; 12.0 to before 12.6.4; 13.0 to before 13.3 Vulnerable ·Apple

Remediation

Fix · CNA macOS (Apple) Fixed in 13.3
Fix · CNA macOS (Apple) Fixed in 12.6
Fix · CNA macOS (Apple) Fixed in 11.7

Fixed in the same release

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

Release · 2023-05-08
Apple macOS 13.3
52 records Highest priority Priority MEDIUM 8 MEDIUM, 44 LOW
Other records, highest priority first
- TI-2023-12765 Race condition in Apple macOSPriority MEDIUM 51
- TI-2023-09358 Apple macOS: A file from an iCloud shared-by-me folder may be able to bypass GatekeeperPriority MEDIUM 50
- TI-2023-12548 Resource allocation without limits in Apple macOSPriority MEDIUM 49
Show all 52 records →
Release · 2023-05-08
Apple macOS 12.6
32 records Highest priority Priority MEDIUM 5 MEDIUM, 27 LOW
Other records, highest priority first
- TI-2023-12548 Resource allocation without limits in Apple macOSPriority MEDIUM 49
- TI-2023-12525 Buffer overflow in Apple macOSPriority MEDIUM 44
- TI-2023-12524 Buffer overflow in Apple macOSPriority MEDIUM 44
Show all 32 records →

Show 1 more group

Release · 2023-05-08
Apple macOS 11.7
29 records Highest priority Priority MEDIUM 3 MEDIUM, 26 LOW
Other records, highest priority first
- TI-2023-12548 Resource allocation without limits in Apple macOSPriority MEDIUM 49
- TI-2023-12525 Buffer overflow in Apple macOSPriority MEDIUM 44
- TI-2023-12534 Origin validation error in Apple macOSPriority LOW 38
Show all 29 records →

Timeline

2026-10-02 Threatist record created from CVE-2023-27953
2026-10-03 Alias added: GHSA-7cm5-9qc6-j36q

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