TI-2020-03355 Aliases CVE-2020-3853 GHSA-2cm9-frr4-6q2v

Type confusion in Apple iOS

LOW 37CWE-843Published 2020-02-27 · Updated 2024-08-04

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-843 and the CVSS impact.

Summary

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. A malicious application may be able to execute arbitrary code with system privileges.

Why it matters now

EPSS 0.01339 71st percentileScored 2026-11-07

Fix Fixed iOS (Apple): iOS 13.3.1 and iPadOS 13.3.1macOS (Apple): macOS Catalina 10.15.3+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	iOS	before iOS 13.3.1 and iPadOS 13.3.1	iOS 13.3.1 and iPadOS 13.3.1	Patch available	CNA
Apple	macOS	before macOS Catalina 10.15.3	macOS Catalina 10.15.3	Patch available	CNA
Apple	tvOS	before tvOS 13.3.1	tvOS 13.3.1	Patch available	CNA
Apple	watchOS	before watchOS 6.1.2	watchOS 6.1.2	Patch available	CNA

iOS VendorApple Affected before iOS 13.3.1 and iPadOS 13.3.1 Fixed in iOS 13.3.1 and iPadOS 13.3.1 Patch available CNA
macOS VendorApple Affected before macOS Catalina 10.15.3 Fixed in macOS Catalina 10.15.3 Patch available CNA
tvOS VendorApple Affected before tvOS 13.3.1 Fixed in tvOS 13.3.1 Patch available CNA
watchOS VendorApple Affected before watchOS 6.1.2 Fixed in watchOS 6.1.2 Patch available CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:o:apple:ipados::::::::	before 13.3.1	Vulnerable	Apple
cpe:2.3:o:apple:iphone_os::::::::	before 13.3.1	Vulnerable	Apple
cpe:2.3:o:apple:mac_os_x::::::::	before 10.15.3	Vulnerable	Apple
cpe:2.3:o:apple:tvos::::::::	before 13.3.1	Vulnerable	Apple
cpe:2.3:o:apple:watchos::::::::	before 6.1.2	Vulnerable	Apple

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.3.1 Vulnerable ·Apple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.3.1 Vulnerable ·Apple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.3 Vulnerable ·Apple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.3.1 Vulnerable ·Apple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.1.2 Vulnerable ·Apple

Remediation

Fix · CNA iOS (Apple) Fixed in iOS 13.3.1 and iPadOS 13.3.1
Fix · CNA macOS (Apple) Fixed in macOS Catalina 10.15.3
Fix · CNA tvOS (Apple) Fixed in tvOS 13.3.1
Fix · CNA watchOS (Apple) Fixed in watchOS 6.1.2

Fixed in the same release

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

Release · 2020-02-27
Apple iOS iOS 13.3.1 and iPadOS 13.3.1
25 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 22 LOW
Other records, highest priority first
- TI-2020-03339 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-03348 Memory corruption in Apple iOSPriority MEDIUM 42
- TI-2020-03328 Out-of-bounds write in Apple iOSPriority MEDIUM 41
Show all 25 records →
Release · 2020-02-27
Apple macOS macOS Catalina 10.15.3
23 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 21 LOW
Other records, highest priority first
- TI-2020-03339 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-03348 Memory corruption in Apple iOSPriority MEDIUM 42
- TI-2020-03378 Out-of-bounds read in Apple macOSPriority LOW 37
Show all 23 records →

Show 2 more groups

Release · 2020-02-27
Apple watchOS watchOS 6.1.2
16 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 14 LOW
Other records, highest priority first
- TI-2020-03339 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-03348 Memory corruption in Apple iOSPriority MEDIUM 42
- TI-2020-03378 Out-of-bounds read in Apple macOSPriority LOW 37
Show all 16 records →
Release · 2020-02-27
Apple tvOS tvOS 13.3.1
15 records Highest priority Priority CRITICAL 1 CRITICAL, 2 MEDIUM, 12 LOW
Other records, highest priority first
- TI-2020-03339 Out-of-bounds write in Apple iOSPriority CRITICAL 93
- TI-2020-03348 Memory corruption in Apple iOSPriority MEDIUM 42
- TI-2020-03328 Out-of-bounds write in Apple iOSPriority MEDIUM 41
Show all 15 records →

Timeline

2026-10-02 Threatist record created from CVE-2020-3853
2026-10-03 Alias added: GHSA-2cm9-frr4-6q2v

References

Advisory 4

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 2382 →

Sources

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