Information disclosure in Apple macOS
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.
Summary
An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.6, watchOS 26.6. An app may be able to access sensitive user data.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apple | macOS | before 26.6 | 26.6 | Patch available | CNA |
| Apple | watchOS | before 26.6 | 26.6 | Patch available | CNA |
Remediation
- Fix · CNA macOS (Apple) Fixed in 26.6
- Fix · CNA watchOS (Apple) Fixed in 26.6
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple watchOS 26.6
64 records Highest priority Priority MEDIUM 23 MEDIUM, 41 LOW
Other records, highest priority first
- TI-2026-46261 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-46307 Apple iOS and iPadOS: An app may be able to cause unexpected system terminationPriority MEDIUM 50
- TI-2026-46284 Use after free in Apple iOS and iPadOSPriority MEDIUM 50
- Release ·
Apple macOS 26.6
32 records Highest priority Priority MEDIUM 14 MEDIUM, 18 LOW
Other records, highest priority first
- TI-2026-46261 Memory corruption in Apple iOS and iPadOSPriority MEDIUM 51
- TI-2026-46284 Use after free in Apple iOS and iPadOSPriority MEDIUM 50
- TI-2026-46281 Missing authorization in Apple iOS and iPadOSPriority MEDIUM 50
Timeline
- 2026-10-02 Threatist record created from CVE-2026-43759
- 2026-10-03 Alias added: GHSA-355h-q98w-p9m8
References
More Apple Macos vulnerabilities
- TI-2026-46583 Improper authentication in Apple macOS KEVCVSS 3.1CRITICAL 9.8
- 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
Sources
- CVE-2026-43759 · CVE Program
- CVE-2026-43759 · NVD
- FIRST EPSS
- GHSA-355h-q98w-p9m8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences