CVE-2019-8553

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-12-18 · updated 2026-06-17
Weakness: CWE-787

Description

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2. Clicking a malicious SMS link may lead to arbitrary code execution.

Affected products

Apple Iphone Os: before 12.2 — fixed in 12.2
Apple tvOS: before 12.2 — fixed in 12.2
Apple watchOS: before 5.2 — fixed in 5.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.2; Apple tvOS 12.2; Apple watchOS 5.2. Check the vendor advisory for mitigations.

References

https://support.apple.com/HT209599
https://support.apple.com/HT209601
https://support.apple.com/HT209602
https://support.apple.com/HT209599
https://support.apple.com/HT209601
https://support.apple.com/HT209602

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