CVE-2026-39871

HIGH
Published May 11, 2026 Modified May 12, 2026 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.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0004
Probability of exploitation
0.13%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-552 CWE-552

Affected Products

Vendor Product
apple macos
apple macos
apple macos

References

Frequently Asked Questions

What is CVE-2026-39871? +
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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-39871? +
CVE-2026-39871 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-39871? +
CVE-2026-39871 affects products from apple, specifically: macos. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-39871? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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