A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1, iOS 14.2 and iPadOS 14.2, watchOS 7.1, tvOS 14.2. Processing maliciously crafted web content may lead to code execution.
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesNone
User InteractionActive
Threat
Exploit MaturityUnreported
Vulnerable System
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | nvd | AV: P→N, AC: H→L, PR: H→N, VC: N→H, VI: N→H, VA: N→H | 0.0 → 4.8 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 0.0 |
Affected Software
| Vendor | Product | Version |
|---|
| Apple | iOS and iPadOS | < 14.2 |
| apple | ipados | < 14.2 |
| apple | iphone_os | < 14.2 |
| apple | mac_os_x | < 11.0.1 |
| apple | mac_os_x | < 11.1.0 |
| Apple | macOS | < 11.0 |
| Apple | macOS | < 11.1 |
| apple | tvos | < 14.2 |
| Apple | tvOS | < 14.2 |
| apple | watchos | < 7.1 |
| Apple | watchOS | < 7.1 |
Published: 2021-04-02
