What is CVE-2020-3888?

CVE-2020-3888 is a medium-severity vulnerability in Apple iOS. CVSS score: 4.3/10. Published 2020-04-01.

How severe is CVE-2020-3888?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Apple iOS

CVE-2020-3888

A logic issue was addressed with improved restrictions. This issue is fixed in iOS 13.4 and iPadOS 13.4. A maliciously crafted page may interfere with other web contexts.

Published 2020-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Apple iOS — versions unspecified
Apple Ipad OS
Apple Iphone OS

References

support.apple.com/HT211102 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2020-3888?: CVE-2020-3888 is a medium-severity vulnerability in Apple iOS. CVSS score: 4.3/10. Published 2020-04-01.
How severe is CVE-2020-3888?: Medium severity. CVSS v3 base score is 4.3 out of 10.