A resource exhaustion issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1. An attacker in a privileged network position may be able to perform denial of service.
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesLow
User InteractionNone
Threat
Exploit MaturityPoC
Vulnerable System
ConfidentialityNone
IntegrityNone
AvailabilityHigh
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | PoC | E: U→P | 2.3 → 5.4 |
| 2026-07-21 | nvd | AV: P→N, AC: H→L, PR: H→L, UI: A→N, VA: N→H | 0.0 → 2.3 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 0.0 |
Affected Software
| Vendor | Product | Version |
|---|
| Apple | macOS | < 11.0 |
| apple | macos | < 11.0.1 |
Published: 2021-10-28
