Unrated severityNVD Advisory· Published Sep 14, 2026

CVE-2026-86889

Description

A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.

Affected products

Apple Inc./macOSllm-fuzzy
Range: Golden Gate 27, Sequoia 15.8, Tahoe 26.7

Patches

Vulnerability mechanics

References

support.apple.com/en-us/149035nvd
support.apple.com/en-us/149042nvd
support.apple.com/en-us/149043nvd

News mentions

Apple Updates Everything, (Mon, Sep 14th)
SANS Internet Storm Center · Sep 14, 2026

cvss	0.000
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000