CVE-2018-4344
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Apple Multiple Products Memory Corruption Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
A memory corruption issue was addressed with improved memory handling. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 2% (percentile: 84) as of 2 November 2026
- CWE
- CWE-119
Affected products
apple: iphone os; apple: mac os x; apple: tvos; apple: watchos
References
- https://support.apple.com/kb/HT209106 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209107 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209108 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209139 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209106 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209107 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209108 Release NotesVendor Advisory
- https://support.apple.com/kb/HT209139 Release NotesVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018… US Government Resource