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Vulnerability record · CVE-2018-4386 · published 3 April 2019

CVE-2018-4386: Apple safari memory buffer overflow vulnerability

Apple · Safari

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.

8.8 CVSS 3.0 High EPSS 6.5% · top 6.5% CWE-119 · Memory buffer overflow
8.8CVSS 3.0 base score, v2 6.8
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/155871/Sony-Playstation-4-Webkit-Code-Execution.html
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 Vendor Advisory
https://support.apple.com/kb/HT209198 Vendor Advisory
http://packetstormsecurity.com/files/155871/Sony-Playstation-4-Webkit-Code-Execution.html
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 Vendor Advisory
https://support.apple.com/kb/HT209198 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-4386), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.