CVE-2026-84583
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
A permissions issue was fixed with additional restrictions. A local app may be able to read a persistent account identifier. The fix is included in iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, and watchOS 27.
Risk Assessment
A malicious app could access a persistent account identifier, leading to privacy breaches and user tracking. A wide range of Apple devices are affected.
Recommendation
Update all affected systems to the patched versions. Restrict app permissions.
Other vulnerabilities in Apple operating systems
See all- CVE-2023-40403Medium
The issue was addressed with improved memory handling. It is fixed in macOS Ventura 13.6, tvOS 17, iOS 16.7 and iPadOS 16.7, macOS Monterey 12.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. Processing web content may disclose sensitive information.
- CVE-2026-64774Critical
An integer overflow vulnerability was addressed with improved input validation. The issue affects iOS, iPadOS, macOS, tvOS, and visionOS. A remote attacker may cause unexpected application termination or heap corruption.
- CVE-2026-64772Critical
An out-of-bounds write issue was addressed with improved input validation. Affects iOS, iPadOS, macOS, tvOS, and visionOS. A remote attacker may cause unexpected application termination or heap corruption.
- CVE-2026-64771Critical
A buffer overflow vulnerability was addressed with improved bounds checking. The issue affects iOS, iPadOS, macOS, tvOS, and visionOS. A remote attacker may cause unexpected application termination or heap corruption.
- CVE-2026-64770Critical
An out-of-bounds write issue was addressed with improved bounds checking. The issue affects iOS, iPadOS, macOS, tvOS, and visionOS. A remote attacker may cause unexpected application termination or heap corruption.
- CVE-2026-64769Critical
An out-of-bounds write issue was addressed with improved bounds checking. The issue affects iOS, iPadOS, macOS, tvOS, and visionOS. A remote attacker may cause unexpected application termination or heap corruption.
- CVE-2026-64746Critical
An authorization issue was addressed with improved validation. Affects iOS, iPadOS, macOS, visionOS, and watchOS. An app may add contacts without user authorization.
- CVE-2026-64726Critical
The issue was addressed with improved memory handling. Affects iOS, iPadOS, macOS, tvOS, visionOS, and watchOS. An attacker in physical proximity may corrupt process memory.
- CVE-2026-43812Critical
A use after free issue was addressed with improved memory management. Affects iOS, iPadOS, macOS, tvOS, and visionOS. An app may cause unexpected system termination.
- CVE-2026-43809Critical
An out-of-bounds read was addressed with improved bounds checking. Affects iOS, iPadOS, macOS. An app may cause unexpected system termination.
Original NVD description (English source)
A permissions issue was addressed with additional restrictions. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. A local app may be able to read a persistent account identifier.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS