CVE-2026-20699

low-risk

Published 2026-03-25

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.

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.2/10 Medium

LOCAL / LOW complexity

Affected Products (1)

Macos

Affected Vendors

Apple

References (4)

Release Notes https://support.apple.com/en-us/126348

Release Notes https://support.apple.com/en-us/126794

Release Notes https://support.apple.com/en-us/126795

Release Notes https://support.apple.com/en-us/126796

/ 100

low-risk

Severity 20/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal