High severity · published Apr 3, 2019
CVE-2018-4386
Multiple memory corruption issues were addressed with improved memory handling
8.8
CVSS
6.5%
EPSS
No
On KEV
Description
Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, tvOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.5% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 12.1 · source: NVD
IC
Icloud · Apple
before 7.8 · source: NVD
IT
Itunes · Apple
before 12.9.1 · source: NVD
SA
Safari · Apple
before 12.0.1 · source: NVD
TV
Tvos · Apple
before 12.1 · source: NVD
WA
Watchos · Apple
before 5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-4386
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-4386
packetstormsecurity.com
http://packetstormsecurity.com/files/155871/Sony-Playstation-4-Webkit-Code-Execution.html
Vendor Advisory
https://support.apple.com/kb/HT209192
Vendor Advisory
https://support.apple.com/kb/HT209194
Vendor Advisory
https://support.apple.com/kb/HT209195
Vendor Advisory
https://support.apple.com/kb/HT209196
Vendor Advisory
https://support.apple.com/kb/HT209197
More from iOS
10.0
CVE-2025-43300
Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24085
Apple Multiple Products Use-After-Free Vulnerability
9.8
CVE-2025-31200
Apple Multiple Products Memory Corruption Vulnerability
9.8
CVE-2025-31201
Apple Multiple Products Arbitrary Read and Write Vulnerability