CVE-2026-39871

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-11 · updated 2026-10-26
Weakness: CWE-552

Description

A path handling issue was addressed with improved logic. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to observe unprotected user data.

Affected products

Apple macOS: from 14.0 before 14.8.7; from 15.0 before 15.7.7; from 26.0 before 26.5 — fixed in 14.8.7, 15.7.7, 26.5

How to fix

Upgrade to a fixed version: Apple macOS 14.8.7, 15.7.7, 26.5. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/127115
https://support.apple.com/en-us/127116
https://support.apple.com/en-us/127117

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