Unrated severityNVD Advisory· Published Sep 14, 2026

CVE-2026-84509

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.

Affected products

Apple Inc./macOS Golden Gatellm-fuzzy
Range: before 27
Apple Inc./macOS Sequoiallm-fuzzy
Range: before 15.8
Apple Inc./macOS Tahoellm-fuzzy
Range: before 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

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