What’s Vulnerable › Vulnerabilities

CVE-2019-8633

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% 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

A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, iOS 12.3, tvOS 12.3, watchOS 5.3. An application may be able to read restricted memory.

Affected products

• Apple Iphone Os: before 12.3 — fixed in 12.3
• macOS: from 10.13.6 before 10.14.5 — fixed in 10.14.5
• Apple tvOS: before 12.3 — fixed in 12.3
• Apple watchOS: before 5.3 — fixed in 5.3

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.3; macOS 10.14.5; Apple tvOS 12.3; Apple watchOS 5.3. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT210118
• https://support.apple.com/en-us/HT210119
• https://support.apple.com/en-us/HT210120
• https://support.apple.com/en-us/HT210353
• https://support.apple.com/en-us/HT210118
• https://support.apple.com/en-us/HT210119
• https://support.apple.com/en-us/HT210120
• https://support.apple.com/en-us/HT210353

Get alerted when CVE-2019-8633 or the next vulnerability affects your stack