What’s Vulnerable › Vulnerabilities

CVE-2018-4429

• Severity: medium (CVSS 6.5 v3.0)
• 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: 2019-04-03 · updated 2026-06-17
• Weakness: CWE-20

Description

A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation. This issue affected versions prior to iOS 12.1.1, watchOS 5.1.2.

Affected products

• Apple Iphone Os: before 12.1.1 — fixed in 12.1.1
• Apple watchOS: before 5.1.2 — fixed in 5.1.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.1.1; Apple watchOS 5.1.2. Check the vendor advisory for mitigations.

References

• https://support.apple.com/kb/HT209340
• https://support.apple.com/kb/HT209343
• https://support.apple.com/kb/HT209340
• https://support.apple.com/kb/HT209343

Get alerted when CVE-2018-4429 or the next vulnerability affects your stack