What’s Vulnerable › Vulnerabilities

CVE-2019-8664

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17
• Weakness: CWE-20

Description

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 12.3, watchOS 5.2.1. Processing a maliciously crafted message may lead to a denial of service.

Affected products

• Apple Iphone Os: before 12.3 — fixed in 12.3
• Apple watchOS: before 5.2.1 — fixed in 5.2.1

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.3; Apple watchOS 5.2.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT210118
• https://support.apple.com/en-us/HT210122
• https://support.apple.com/en-us/HT210118
• https://support.apple.com/en-us/HT210122

Get alerted when CVE-2019-8664 or the next vulnerability affects your stack