Out-of-bounds read in Apple iOS
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 3.0 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 12.1.3, macOS Mojave 10.14.3, tvOS 12.1.2, watchOS 5.1.3. A malicious application may be able to read restricted memory.
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 12.1.3 | iOS 12.1.3 | Patch available | CNA |
| Apple | macOS | before macOS Mojave 10.14.3 | macOS Mojave 10.14.3 | Patch available | CNA |
| Apple | tvOS | before tvOS 12.1.2 | tvOS 12.1.2 | Patch available | CNA |
| Apple | watchOS | before watchOS 5.1.3 | watchOS 5.1.3 | Patch available | CNA |
- iOS VendorApple Affected before iOS 12.1.3 Fixed in iOS 12.1.3 Patch available CNA
- macOS VendorApple Affected before macOS Mojave 10.14.3 Fixed in macOS Mojave 10.14.3 Patch available CNA
- tvOS VendorApple Affected before tvOS 12.1.2 Fixed in tvOS 12.1.2 Patch available CNA
- watchOS VendorApple Affected before watchOS 5.1.3 Fixed in watchOS 5.1.3 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 12.1.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | before 10.14.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 12.1.2 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 5.1.3 | Vulnerable | Apple |
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 12.1.3 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.14.3 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 12.1.2 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 5.1.3 Vulnerable ·Apple
Remediation
- Fix · CNA iOS (Apple) Fixed in iOS 12.1.3
- Fix · CNA macOS (Apple) Fixed in macOS Mojave 10.14.3
- Fix · CNA tvOS (Apple) Fixed in tvOS 12.1.2
- Fix · CNA watchOS (Apple) Fixed in watchOS 5.1.3
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple macOS macOS Mojave 10.14.3
18 records Highest priority Priority CRITICAL 1 CRITICAL, 7 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2019-04421 A logic issue existed in the handling of Group FaceTime calls.Priority CRITICAL 92
- TI-2019-04423 Out-of-bounds write in Apple iOSPriority MEDIUM 57
- TI-2019-04422 Memory corruption in Apple iOSPriority MEDIUM 50
- Release ·
Apple iOS iOS 12.1.3
18 records Highest priority Priority CRITICAL 1 CRITICAL, 7 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2019-04421 A logic issue existed in the handling of Group FaceTime calls.Priority CRITICAL 92
- TI-2019-04423 Out-of-bounds write in Apple iOSPriority MEDIUM 57
- TI-2019-04422 Memory corruption in Apple iOSPriority MEDIUM 50
Show 2 more groups
- Release ·
Apple tvOS tvOS 12.1.2
11 records Highest priority Priority MEDIUM 6 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2019-04423 Out-of-bounds write in Apple iOSPriority MEDIUM 57
- TI-2019-04422 Memory corruption in Apple iOSPriority MEDIUM 50
- TI-2019-04412 Type confusion in Apple iOSPriority MEDIUM 44
- Release ·
Apple watchOS watchOS 5.1.3
9 records Highest priority Priority MEDIUM 3 MEDIUM, 6 LOW
Other records, highest priority first
- TI-2019-04422 Memory corruption in Apple iOSPriority MEDIUM 50
- TI-2019-04412 Type confusion in Apple iOSPriority MEDIUM 44
- TI-2019-04411 Memory corruption in Apple iOSPriority MEDIUM 42
Timeline
- 2026-10-02 Threatist record created from CVE-2019-6231
- 2026-10-03 Alias added: GHSA-27jf-6cr3-9cpv
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-2019-6231 · CVE Program
- CVE-2019-6231 · NVD
- FIRST EPSS
- GHSA-27jf-6cr3-9cpv · 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