CVE-2020-3906

Name: CVE-2020-3906
Creator: NVD / NIST
Published: 2020-04-01T18:15:16.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.96%

Last modified Jun 17, 2026

CVE-2020-3906 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A logic issue was addressed with improved restrictions. This issue is fixed in macOS Catalina 10.15.4. EPSS estimates a 0.96% chance of exploitation in the next 30 days.

Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Catalina 10.15.4. A maliciously crafted application may be able to bypass code signing enforcement.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.96%

56.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	< 10.15.4

References

https://support.apple.com/HT211100Release Notes, Vendor Advisory
https://support.apple.com/HT211100Release Notes, Vendor Advisory

Timeline

Published: Apr 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3906?

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Catalina 10.15.4. A maliciously crafted application may be able to bypass code signing enforcement.

How severe is CVE-2020-3906?

CVE-2020-3906 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.96% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3906?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3906?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST