TI-2019-06307 Aliases CVE-2019-8744 GHSA-mcp5-8xm2-27j2

Out-of-bounds write in Apple tvOS

LOW 27CWE-787Published 2020-10-27 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A memory corruption issue existed in the handling of IPv6 packets. This issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15, tvOS 13, macOS Catalina 10.15.1, Security Update 2019-001, and Security Update 2019-006, watchOS 6, iOS 13. A malicious application may be able to determine kernel memory layout.

Why it matters now

EPSS 0.00899 59th percentileScored 2026-11-07

Fix Fixed tvOS (Apple): 13iOS (Apple): 13+2 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	tvOS	before 13	13	Patch available	CNA
Apple	iOS	before 13	13	Patch available	CNA
Apple	watchOS	before 6	6	Patch available	CNA
Apple	macOS	before 10.15	10.15	Patch available	CNA
Apple	macOS	before 10.15	10.15	Patch available	CNA

tvOS VendorApple Affected before 13 Fixed in 13 Patch available CNA
iOS VendorApple Affected before 13 Fixed in 13 Patch available CNA
watchOS VendorApple Affected before 6 Fixed in 6 Patch available CNA
macOS VendorApple Affected before 10.15 Fixed in 10.15 Patch available CNA
macOS VendorApple Affected before 10.15 Fixed in 10.15 Patch available CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:iphone_os::::::::	before 13.1	Vulnerable	Apple
cpe:2.3:o:apple:mac_os_x::::::::	before 10.15	Vulnerable	Apple
cpe:2.3:o:apple:tvos::::::::	before 13	Vulnerable	Apple
cpe:2.3:o:apple:watchos::::::::	before 6.0	Vulnerable	Apple

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.1 Vulnerable ·Apple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15 Vulnerable ·Apple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13 Vulnerable ·Apple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.0 Vulnerable ·Apple

Remediation

Fix · CNA tvOS (Apple) Fixed in 13
Fix · CNA iOS (Apple) Fixed in 13
Fix · CNA watchOS (Apple) Fixed in 6
Fix · CNA macOS (Apple) Fixed in 10.15
Fix · CNA macOS (Apple) Fixed in 10.15

Fixed in the same release

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

Release · 2020-10-27
Apple macOS 10.15
59 records Highest priority Priority MEDIUM 9 MEDIUM, 50 LOW
Other records, highest priority first
- TI-2019-06309 Out-of-bounds read in Apple tvOSPriority MEDIUM 48
- TI-2020-07942 Buffer overflow in Apple macOSPriority MEDIUM 46
- TI-2019-06280 Out-of-bounds write in Apple macOSPriority MEDIUM 46
Show all 59 records →
Release · 2020-10-27
Apple tvOS 13
23 records Highest priority Priority MEDIUM 10 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2019-06309 Out-of-bounds read in Apple tvOSPriority MEDIUM 48
- TI-2019-06278 Out-of-bounds write in Apple tvOSPriority MEDIUM 47
- TI-2019-06319 Out-of-bounds write in Apple tvOSPriority MEDIUM 45
Show all 23 records →

Show 2 more groups

Release · 2020-10-27
Apple watchOS 6
20 records Highest priority Priority MEDIUM 9 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2019-06309 Out-of-bounds read in Apple tvOSPriority MEDIUM 48
- TI-2019-06278 Out-of-bounds write in Apple tvOSPriority MEDIUM 47
- TI-2019-06319 Out-of-bounds write in Apple tvOSPriority MEDIUM 45
Show all 20 records →
Release · 2020-10-27
Apple iOS 13
17 records Highest priority Priority MEDIUM 7 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2019-06309 Out-of-bounds read in Apple tvOSPriority MEDIUM 48
- TI-2019-06278 Out-of-bounds write in Apple tvOSPriority MEDIUM 47
- TI-2019-06319 Out-of-bounds write in Apple tvOSPriority MEDIUM 45
Show all 17 records →

Timeline

2026-10-02 Threatist record created from CVE-2019-8744
2026-10-03 Alias added: GHSA-mcp5-8xm2-27j2

References

Advisory 5

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
TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8

See all 4500 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences