What is CVE-2018-4329?

CVE-2018-4329 is a high-severity vulnerability in Apple Iphone OS, classified under CWE-19. CVSS score: 7.5/10. Published 2019-04-03.

How severe is CVE-2018-4329?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apple Iphone OS

CVE-2018-4329

Clearing a history item may not clear visits with redirect chains. The issue was addressed with improved data deletion. This issue affected versions prior to iOS 12, Safari 12.

Published 2019-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Apple Iphone OS
Apple Safari
iOS, Safari — versions Versions prior to: iOS 12, Safari 12

Weakness classification (CWE)

CWE-19

References

support.apple.com/kb/HT209106 (Vendor Advisory)
support.apple.com/kb/HT209109 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-4329?: CVE-2018-4329 is a high-severity vulnerability in Apple Iphone OS, classified under CWE-19. CVSS score: 7.5/10. Published 2019-04-03.
How severe is CVE-2018-4329?: High severity. CVSS v3 base score is 7.5 out of 10.