Out-of-bounds write in Apple iOS
Priority MEDIUM 42CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.1.3, tvOS 12.1.2, Safari 12.0.3, iTunes 12.9.3 for Windows, iCloud for Windows 7.10. Processing maliciously crafted web content may lead to arbitrary code execution.
Why it matters now
EPSS 0.01857 79th percentileScored 2026-11-07
Fix Fixed iOS (Apple): iOS 12.1.3tvOS (Apple): tvOS 12.1.2+3 more products
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 | tvOS | before tvOS 12.1.2 | tvOS 12.1.2 | Patch available | CNA |
| Apple | Safari | before Safari 12.0.3 | Safari 12.0.3 | Patch available | CNA |
| Apple | iTunes for Windows | before iTunes 12.9.3 for Windows | iTunes 12.9.3 for Windows | Patch available | CNA |
| Apple | iCloud for Windows | before iCloud for Windows 7.10 | iCloud for Windows 7.10 | Patch available | CNA |
- iOS VendorApple Affected before iOS 12.1.3 Fixed in iOS 12.1.3 Patch available CNA
- tvOS VendorApple Affected before tvOS 12.1.2 Fixed in tvOS 12.1.2 Patch available CNA
- Safari VendorApple Affected before Safari 12.0.3 Fixed in Safari 12.0.3 Patch available CNA
- iTunes for Windows VendorApple Affected before iTunes 12.9.3 for Windows Fixed in iTunes 12.9.3 for Windows Patch available CNA
- iCloud for Windows VendorApple Affected before iCloud for Windows 7.10 Fixed in iCloud for Windows 7.10 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* | before 12.0.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 12.1.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | before 12.1.2 | Vulnerable | Apple |
| cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:* | before 7.10 | Vulnerable | Apple |
| cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:* | before 12.9.3 | Vulnerable | Apple |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
- cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 12.0.3 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 12.1.3 Vulnerable ·Apple
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 12.1.2 Vulnerable ·Apple
- cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:* Versions before 7.10 Vulnerable ·Apple
- cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:* Versions before 12.9.3 Vulnerable ·Apple
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
Remediation
- Fix · CNA iOS (Apple) Fixed in iOS 12.1.3
- Fix · CNA tvOS (Apple) Fixed in tvOS 12.1.2
- Fix · CNA Safari (Apple) Fixed in Safari 12.0.3
- Fix · CNA iTunes for Windows (Apple) Fixed in iTunes 12.9.3 for Windows
- Fix · CNA iCloud for Windows (Apple) Fixed in iCloud for Windows 7.10
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Apple Safari, iCloud for Windows and 3 more products — GLSA-201903-12
9 records Highest priority Priority MEDIUM 8 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2019-04413 Type confusion in Apple iOSPriority MEDIUM 50
- TI-2019-04432 Out-of-bounds write in Apple iOSPriority MEDIUM 42
- TI-2019-04431 Out-of-bounds write in Apple iOSPriority MEDIUM 42
- Advisory ·
Apple Safari, iCloud for Windows and 3 more products — USN-3889-1
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2019-04413 Type confusion in Apple iOSPriority MEDIUM 50
Timeline
- 2026-10-02 Threatist record created from CVE-2019-6212
- 2026-10-03 Alias added: GHSA-993j-f6vv-9wqp
References
More Apple Icloud vulnerabilities
- TI-2019-06084 Type confusion in Apple iOS KEVCVSS 3.1HIGH 8.8
- TI-2020-16987 Type confusion in Apple watchOS KEVCVSS 3.1HIGH 7.8
- TI-2020-07926 Apple iOS: A remote attacker may be able to cause arbitrary code execution CVSS 3.1CRITICAL 9.8
- TI-2018-03187 Memory corruption in Apple WebKit CVSS 3.1HIGH 8.8
- TI-2018-03118 Memory corruption in Apple WebKit CVSS 3.0HIGH 8.8
- TI-2018-03361 Memory corruption in iOS, tvOS, watchOS, Safari, iTunes for Windows, iCloud for Windows CVSS 3.0HIGH 8.8
Sources
- CVE-2019-6212 · CVE Program
- CVE-2019-6212 · NVD
- FIRST EPSS
- GHSA-993j-f6vv-9wqp · 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