Use after free in Apple iOS
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- 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-416 and the CVSS impact.
Summary
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.4, tvOS 12.4, watchOS 5.3. A remote attacker may be able to cause arbitrary code execution.
Why it matters now
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 12.4 | iOS 12.4 | Patch available | CNA |
| Apple | tvOS | before tvOS 12.4 | tvOS 12.4 | Patch available | CNA |
| Apple | watchOS | before watchOS 5.3 | watchOS 5.3 | Patch available | CNA |
Remediation
- Fix · CNA iOS (Apple) Fixed in iOS 12.4
- Fix · CNA tvOS (Apple) Fixed in tvOS 12.4
- Fix · CNA watchOS (Apple) Fixed in watchOS 5.3
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple iOS iOS 12.4
33 records Highest priority Priority MEDIUM 25 MEDIUM, 8 LOW
Other records, highest priority first
- TI-2019-06227 Out-of-bounds write in Apple iOSPriority MEDIUM 57
- TI-2019-06229 Use after free in Apple iOSPriority MEDIUM 54
- TI-2019-06256 Out-of-bounds write in Apple iOSPriority MEDIUM 53
- Release ·
Apple tvOS tvOS 12.4
29 records Highest priority Priority MEDIUM 25 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2019-06227 Out-of-bounds write in Apple iOSPriority MEDIUM 57
- TI-2019-06229 Use after free in Apple iOSPriority MEDIUM 54
- TI-2019-06256 Out-of-bounds write in Apple iOSPriority MEDIUM 53
Show 1 more group
- Release ·
Apple watchOS watchOS 5.3
19 records Highest priority Priority MEDIUM 15 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2019-06227 Out-of-bounds write in Apple iOSPriority MEDIUM 57
- TI-2019-06229 Use after free in Apple iOSPriority MEDIUM 54
- TI-2019-06256 Out-of-bounds write in Apple iOSPriority MEDIUM 53
Timeline
- 2026-10-02 Threatist record created from CVE-2019-8647
- 2026-10-03 Alias added: GHSA-fmgq-m9qq-mj46
References
More Apple Iphone Os vulnerabilities
- 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
Sources
- CVE-2019-8647 · CVE Program
- CVE-2019-8647 · NVD
- FIRST EPSS
- GHSA-fmgq-m9qq-mj46 · 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