What is CVE-2021-38642?

CVE-2021-38642 is a medium-severity vulnerability in Apple Iphone OS. CVSS score: 6.1/10. Published 2021-09-02.

How severe is CVE-2021-38642?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Apple Iphone OS

CVE-2021-38642

Microsoft Edge for iOS Spoofing Vulnerability

Published 2021-09-02 · last modified 2026-08-10.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% 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
Microsoft Edge
Microsoft Edge (Chromium-Based) — versions 1.0.0, 1.0.0.0

References

af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38642 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2021-38642?: CVE-2021-38642 is a medium-severity vulnerability in Apple Iphone OS. CVSS score: 6.1/10. Published 2021-09-02.
How severe is CVE-2021-38642?: Medium severity. CVSS v3 base score is 6.1 out of 10.