What’s Vulnerable › Vulnerabilities

CVE-2019-8856

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17

Description

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.

Affected products

• Apple iPadOS: before 13.3 — fixed in 13.3
• Apple Iphone Os: before 13.3 — fixed in 13.3
• macOS: before 10.15.2 — fixed in 10.15.2
• Apple watchOS: before 6.1.1 — fixed in 6.1.1

How to fix

Upgrade to a fixed version: Apple iPadOS 13.3; Apple Iphone Os 13.3; macOS 10.15.2; Apple watchOS 6.1.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT210785
• https://support.apple.com/en-us/HT210788
• https://support.apple.com/en-us/HT210789
• https://support.apple.com/en-us/HT210785
• https://support.apple.com/en-us/HT210788
• https://support.apple.com/en-us/HT210789

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