What’s Vulnerable › Vulnerabilities

CVE-2019-8665

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% 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-20

Description

A denial of service issue was addressed with improved validation. This issue is fixed in iOS 12.4, watchOS 5.3. A remote attacker may cause an unexpected application termination.

Affected products

• Apple Iphone Os: before 12.4 — fixed in 12.4
• Apple watchOS: before 5.3 — fixed in 5.3

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.4; Apple watchOS 5.3. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT210346
• https://support.apple.com/HT210353
• https://support.apple.com/HT210346
• https://support.apple.com/HT210353

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