An API issue existed in the handling of outgoing phone calls initiated with Siri.
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An API issue existed in the handling of outgoing phone calls initiated with Siri. This issue was addressed with improved state handling. This issue is fixed in iOS 13.3 and iPadOS 13.3, watchOS 6.1.1, macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra. Calls made using Siri may be initiated using the wrong cellular plan on devices with two active plans.
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 and iPadOS | before 13.3 | 13.3 | Patch available | CNA |
| Apple | macOS | before 10.15 | 10.15 | Patch available | CNA |
| Apple | macOS | before 6.1 | 6.1 | Patch available | CNA |
- iOS and iPadOS VendorApple Affected before 13.3 Fixed in 13.3 Patch available CNA
- macOS VendorApple Affected before 10.15 Fixed in 10.15 Patch available CNA
- macOS VendorApple Affected before 6.1 Fixed in 6.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | before 13.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 13.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | before 10.15.2 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 6.1.1 | Vulnerable | Apple |
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.3 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.3 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.2 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.1.1 Vulnerable ·Apple
Remediation
- Fix · CNA iOS and iPadOS (Apple) Fixed in 13.3
- Fix · CNA macOS (Apple) Fixed in 10.15
- Fix · CNA macOS (Apple) Fixed in 6.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apple macOS 10.15
59 records Highest priority Priority MEDIUM 9 MEDIUM, 50 LOW
Other records, highest priority first
- TI-2019-06309 Out-of-bounds read in Apple tvOSPriority MEDIUM 48
- TI-2020-07942 Buffer overflow in Apple macOSPriority MEDIUM 46
- TI-2019-06280 Out-of-bounds write in Apple macOSPriority MEDIUM 46
- Release ·
Apple iOS and iPadOS 13.3
17 records Highest priority Priority MEDIUM 4 MEDIUM, 13 LOW
Other records, highest priority first
- TI-2019-06404 Use after free in Apple iOS and iPadOSPriority MEDIUM 43
- TI-2019-06403 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 42
- TI-2019-06395 Out-of-bounds write in Apple iOS and iPadOSPriority MEDIUM 42
Show 1 more group
- Release ·
Apple macOS 6.1
11 records Highest priority Priority MEDIUM 1 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2019-06390 Out-of-bounds read in Apple iOS and iPadOSPriority MEDIUM 42
- TI-2020-03380 Out-of-bounds read in Apple iOS and iPadOSPriority LOW 37
- TI-2019-06398 Out-of-bounds write in Apple iOS and iPadOSPriority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2019-8856
- 2026-10-03 Alias added: GHSA-mr2g-m2pj-f4jh
References
More Apple Ipados 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-2019-8856 · CVE Program
- CVE-2019-8856 · NVD
- FIRST EPSS
- GHSA-mr2g-m2pj-f4jh · 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