What’s Vulnerable › Vulnerabilities

CVE-2019-8547

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% 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-125

Description

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, watchOS 5.2, macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra, iOS 12.2. A remote attacker may be able to leak memory.

Affected products

• Apple Iphone Os: before 12.2 — fixed in 12.2
• macOS: from 10.12.6 before 10.14.5; from 10.14.3 before 10.14.4 — fixed in 10.14.4, 10.14.5
• Apple watchOS: before 5.2 — fixed in 5.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 12.2; macOS 10.14.4, 10.14.5; Apple watchOS 5.2. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT209599
• https://support.apple.com/en-us/HT209600
• https://support.apple.com/en-us/HT209602
• https://support.apple.com/en-us/HT210119
• https://support.apple.com/en-us/HT209599
• https://support.apple.com/en-us/HT209600
• https://support.apple.com/en-us/HT209602
• https://support.apple.com/en-us/HT210119

Get alerted when CVE-2019-8547 or the next vulnerability affects your stack