CVE-2026-20699

Name: CVE-2026-20699
Creator: NVD / NIST
Published: 2026-03-25T01:17:06.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.2/10EPSS 0.14%

Last modified Jun 17, 2026

CVE-2026-20699 is a medium-severity vulnerability rated 6.2/10 on the CVSS scale. A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

Description

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. An app may be able to access user-sensitive data.

Metrics

CVSS 3.1

6.2/10

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

EPSS Probability

0.14%

3.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-347

Affected Software

Vendor	Product	Versions
Apple	Macos	>= 14.0, < 14.8.5
Apple	Macos	>= 15.0, < 15.7.5
Apple	Macos	>= 26.0, < 26.3

References

https://support.apple.com/en-us/126348Release Notes, Vendor Advisory
https://support.apple.com/en-us/126794Release Notes, Vendor Advisory
https://support.apple.com/en-us/126795Release Notes, Vendor Advisory
https://support.apple.com/en-us/126796Release Notes, Vendor Advisory

Timeline

Published: Mar 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-20699?

How severe is CVE-2026-20699?

CVE-2026-20699 has a CVSS score of 6.2/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20699?

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-2026-20699?

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

Scan your code now

Source: NVD / NIST