What is CVE-2020-3917?

CVE-2020-3917 is a medium-severity vulnerability in Apple iOS. CVSS score: 5.5/10. Published 2020-04-01.

How severe is CVE-2020-3917?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Apple iOS

CVE-2020-3917

This issue was addressed with a new entitlement. This issue is fixed in iOS 13.4 and iPadOS 13.4, tvOS 13.4, watchOS 6.2. An application may be able to use an SSH client provided by private frameworks.

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Apple iOS — versions unspecified
Apple Ipados
Apple Iphone OS
Apple tvOS — versions unspecified
Apple watchOS — versions unspecified

References

support.apple.com/HT211102 (Vendor Advisory)
support.apple.com/HT211101 (Vendor Advisory)
support.apple.com/HT211103 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-3917?: CVE-2020-3917 is a medium-severity vulnerability in Apple iOS. CVSS score: 5.5/10. Published 2020-04-01.
How severe is CVE-2020-3917?: Medium severity. CVSS v3 base score is 5.5 out of 10.